Which of the following classes of muscle is/are voluntary? a. skeletal muscle b. cardiac muscle c. smooth muscle d. all of the above

Question

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Answer 1

Textbook Question

Chapter 45, Problem 1TYK

Which of the following classes of muscle is/are voluntary?

a. skeletal muscle

b. cardiac muscle

c. smooth muscle

d. all of the above

Expert Solution & Answer

Summary Introduction

Introduction:

The muscles that are controlled by the external stimulation are called as voluntary muscles. The muscles that are not under voluntary control are called as involuntary muscles.

Answer to Problem 1TYK

Correct answer:

The skeletal muscles fall under the class of voluntary muscles. The skeletal muscles make up the skeletal system of the body. It consists of long, unbranched fibers.

Explanation of Solution

Explanation/Justification for the correct answers:

Option (a) is given as skeletal muscle. The presence of sarcomeres in the muscle cell give them a striated appearance. These muscles can be controlled by the somatic motor neurons and hence, are voluntary in nature. Hence, Option (a) is correct.

Explanation for incorrect answer:

Option (b) is given as cardiac muscle. The muscles that line the walls of the heart and are responsible for pumping blood throughout the body are known as cardiac muscles. The highly branched cardiac muscles are joint end-to-end by the intercalated discs. The electrical signals flow across these intercalated discs and thus coordinate the heartbeats. The cardiac muscles are involuntary in nature as they are not controlled by external stimulation. So, it is incorrect.

Option (c) is given as smooth muscle. Organs like the lungs, blood vessels, reproductive system, urinary bladder, and digestive system are made up of smooth muscles. These muscles show no branching and taper towards the ends. The absence of sarcomeres in the cells give them a smooth appearance. The autonomous motor neurons run across these muscles and hence they are involuntary in nature. So, it is incorrect.

Option (d) is given as all the above. The smooth muscles and the cardiac muscles are involuntary in nature, therefore all of the above cannot be chosen as an option. So, it is incorrect.

Hence, options (b), (c), and (d) are incorrect.

Conclusion

The skeletal muscles are voluntary, whereas the smooth muscles and the cardiac muscles are involuntary in nature.

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Answer 2

Textbook Question

Chapter 45, Problem 1TYK

Which of the following classes of muscle is/are voluntary?

a. skeletal muscle

b. cardiac muscle

c. smooth muscle

d. all of the above

Expert Solution & Answer

Summary Introduction

Introduction:

The muscles that are controlled by the external stimulation are called as voluntary muscles. The muscles that are not under voluntary control are called as involuntary muscles.

Answer to Problem 1TYK

Correct answer:

The skeletal muscles fall under the class of voluntary muscles. The skeletal muscles make up the skeletal system of the body. It consists of long, unbranched fibers.

Explanation of Solution

Explanation/Justification for the correct answers:

Option (a) is given as skeletal muscle. The presence of sarcomeres in the muscle cell give them a striated appearance. These muscles can be controlled by the somatic motor neurons and hence, are voluntary in nature. Hence, Option (a) is correct.

Explanation for incorrect answer:

Option (b) is given as cardiac muscle. The muscles that line the walls of the heart and are responsible for pumping blood throughout the body are known as cardiac muscles. The highly branched cardiac muscles are joint end-to-end by the intercalated discs. The electrical signals flow across these intercalated discs and thus coordinate the heartbeats. The cardiac muscles are involuntary in nature as they are not controlled by external stimulation. So, it is incorrect.

Option (c) is given as smooth muscle. Organs like the lungs, blood vessels, reproductive system, urinary bladder, and digestive system are made up of smooth muscles. These muscles show no branching and taper towards the ends. The absence of sarcomeres in the cells give them a smooth appearance. The autonomous motor neurons run across these muscles and hence they are involuntary in nature. So, it is incorrect.

Option (d) is given as all the above. The smooth muscles and the cardiac muscles are involuntary in nature, therefore all of the above cannot be chosen as an option. So, it is incorrect.

Hence, options (b), (c), and (d) are incorrect.

Conclusion

The skeletal muscles are voluntary, whereas the smooth muscles and the cardiac muscles are involuntary in nature.

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Answer 3

Textbook Question

Chapter 45, Problem 1TYK

Which of the following classes of muscle is/are voluntary?

a. skeletal muscle

b. cardiac muscle

c. smooth muscle

d. all of the above

Expert Solution & Answer

Summary Introduction

Introduction:

The muscles that are controlled by the external stimulation are called as voluntary muscles. The muscles that are not under voluntary control are called as involuntary muscles.

Answer to Problem 1TYK

Correct answer:

The skeletal muscles fall under the class of voluntary muscles. The skeletal muscles make up the skeletal system of the body. It consists of long, unbranched fibers.

Explanation of Solution

Explanation/Justification for the correct answers:

Option (a) is given as skeletal muscle. The presence of sarcomeres in the muscle cell give them a striated appearance. These muscles can be controlled by the somatic motor neurons and hence, are voluntary in nature. Hence, Option (a) is correct.

Explanation for incorrect answer:

Option (b) is given as cardiac muscle. The muscles that line the walls of the heart and are responsible for pumping blood throughout the body are known as cardiac muscles. The highly branched cardiac muscles are joint end-to-end by the intercalated discs. The electrical signals flow across these intercalated discs and thus coordinate the heartbeats. The cardiac muscles are involuntary in nature as they are not controlled by external stimulation. So, it is incorrect.

Option (c) is given as smooth muscle. Organs like the lungs, blood vessels, reproductive system, urinary bladder, and digestive system are made up of smooth muscles. These muscles show no branching and taper towards the ends. The absence of sarcomeres in the cells give them a smooth appearance. The autonomous motor neurons run across these muscles and hence they are involuntary in nature. So, it is incorrect.

Option (d) is given as all the above. The smooth muscles and the cardiac muscles are involuntary in nature, therefore all of the above cannot be chosen as an option. So, it is incorrect.

Hence, options (b), (c), and (d) are incorrect.

Conclusion

The skeletal muscles are voluntary, whereas the smooth muscles and the cardiac muscles are involuntary in nature.

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Answer 4

Textbook Question

Chapter 45, Problem 1TYK

Which of the following classes of muscle is/are voluntary?

a. skeletal muscle

b. cardiac muscle

c. smooth muscle

d. all of the above

Expert Solution & Answer

Summary Introduction

Introduction:

The muscles that are controlled by the external stimulation are called as voluntary muscles. The muscles that are not under voluntary control are called as involuntary muscles.

Answer to Problem 1TYK

Correct answer:

The skeletal muscles fall under the class of voluntary muscles. The skeletal muscles make up the skeletal system of the body. It consists of long, unbranched fibers.

Explanation of Solution

Explanation/Justification for the correct answers:

Option (a) is given as skeletal muscle. The presence of sarcomeres in the muscle cell give them a striated appearance. These muscles can be controlled by the somatic motor neurons and hence, are voluntary in nature. Hence, Option (a) is correct.

Explanation for incorrect answer:

Option (b) is given as cardiac muscle. The muscles that line the walls of the heart and are responsible for pumping blood throughout the body are known as cardiac muscles. The highly branched cardiac muscles are joint end-to-end by the intercalated discs. The electrical signals flow across these intercalated discs and thus coordinate the heartbeats. The cardiac muscles are involuntary in nature as they are not controlled by external stimulation. So, it is incorrect.

Option (c) is given as smooth muscle. Organs like the lungs, blood vessels, reproductive system, urinary bladder, and digestive system are made up of smooth muscles. These muscles show no branching and taper towards the ends. The absence of sarcomeres in the cells give them a smooth appearance. The autonomous motor neurons run across these muscles and hence they are involuntary in nature. So, it is incorrect.

Option (d) is given as all the above. The smooth muscles and the cardiac muscles are involuntary in nature, therefore all of the above cannot be chosen as an option. So, it is incorrect.

Hence, options (b), (c), and (d) are incorrect.

Conclusion

The skeletal muscles are voluntary, whereas the smooth muscles and the cardiac muscles are involuntary in nature.

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Answer 5

Textbook Question

Answer 6

Textbook Question

Answer 7

Expert Solution & Answer

Summary Introduction

Introduction:

The muscles that are controlled by the external stimulation are called as voluntary muscles. The muscles that are not under voluntary control are called as involuntary muscles.

Answer to Problem 1TYK

Correct answer:

The skeletal muscles fall under the class of voluntary muscles. The skeletal muscles make up the skeletal system of the body. It consists of long, unbranched fibers.

Explanation of Solution

Explanation/Justification for the correct answers:

Option (a) is given as skeletal muscle. The presence of sarcomeres in the muscle cell give them a striated appearance. These muscles can be controlled by the somatic motor neurons and hence, are voluntary in nature. Hence, Option (a) is correct.

Explanation for incorrect answer:

Option (b) is given as cardiac muscle. The muscles that line the walls of the heart and are responsible for pumping blood throughout the body are known as cardiac muscles. The highly branched cardiac muscles are joint end-to-end by the intercalated discs. The electrical signals flow across these intercalated discs and thus coordinate the heartbeats. The cardiac muscles are involuntary in nature as they are not controlled by external stimulation. So, it is incorrect.

Option (c) is given as smooth muscle. Organs like the lungs, blood vessels, reproductive system, urinary bladder, and digestive system are made up of smooth muscles. These muscles show no branching and taper towards the ends. The absence of sarcomeres in the cells give them a smooth appearance. The autonomous motor neurons run across these muscles and hence they are involuntary in nature. So, it is incorrect.

Option (d) is given as all the above. The smooth muscles and the cardiac muscles are involuntary in nature, therefore all of the above cannot be chosen as an option. So, it is incorrect.

Hence, options (b), (c), and (d) are incorrect.

Conclusion

The skeletal muscles are voluntary, whereas the smooth muscles and the cardiac muscles are involuntary in nature.

Answer 8

Expert Solution & Answer

Summary Introduction

Introduction:

The muscles that are controlled by the external stimulation are called as voluntary muscles. The muscles that are not under voluntary control are called as involuntary muscles.

Answer to Problem 1TYK

Correct answer:

The skeletal muscles fall under the class of voluntary muscles. The skeletal muscles make up the skeletal system of the body. It consists of long, unbranched fibers.

Explanation of Solution

Explanation/Justification for the correct answers:

Option (a) is given as skeletal muscle. The presence of sarcomeres in the muscle cell give them a striated appearance. These muscles can be controlled by the somatic motor neurons and hence, are voluntary in nature. Hence, Option (a) is correct.

Explanation for incorrect answer:

Option (b) is given as cardiac muscle. The muscles that line the walls of the heart and are responsible for pumping blood throughout the body are known as cardiac muscles. The highly branched cardiac muscles are joint end-to-end by the intercalated discs. The electrical signals flow across these intercalated discs and thus coordinate the heartbeats. The cardiac muscles are involuntary in nature as they are not controlled by external stimulation. So, it is incorrect.

Option (c) is given as smooth muscle. Organs like the lungs, blood vessels, reproductive system, urinary bladder, and digestive system are made up of smooth muscles. These muscles show no branching and taper towards the ends. The absence of sarcomeres in the cells give them a smooth appearance. The autonomous motor neurons run across these muscles and hence they are involuntary in nature. So, it is incorrect.

Option (d) is given as all the above. The smooth muscles and the cardiac muscles are involuntary in nature, therefore all of the above cannot be chosen as an option. So, it is incorrect.

Hence, options (b), (c), and (d) are incorrect.

Conclusion

The skeletal muscles are voluntary, whereas the smooth muscles and the cardiac muscles are involuntary in nature.

Answer 9

Expert Solution & Answer

Answer 10

Expert Solution & Answer

Answer 11

Summary Introduction

Introduction:

The muscles that are controlled by the external stimulation are called as voluntary muscles. The muscles that are not under voluntary control are called as involuntary muscles.

Answer 12

Answer to Problem 1TYK

Correct answer:

The skeletal muscles fall under the class of voluntary muscles. The skeletal muscles make up the skeletal system of the body. It consists of long, unbranched fibers.

Answer 13

Explanation of Solution

Explanation/Justification for the correct answers:

Option (a) is given as skeletal muscle. The presence of sarcomeres in the muscle cell give them a striated appearance. These muscles can be controlled by the somatic motor neurons and hence, are voluntary in nature. Hence, Option (a) is correct.

Explanation for incorrect answer:

Option (b) is given as cardiac muscle. The muscles that line the walls of the heart and are responsible for pumping blood throughout the body are known as cardiac muscles. The highly branched cardiac muscles are joint end-to-end by the intercalated discs. The electrical signals flow across these intercalated discs and thus coordinate the heartbeats. The cardiac muscles are involuntary in nature as they are not controlled by external stimulation. So, it is incorrect.

Option (c) is given as smooth muscle. Organs like the lungs, blood vessels, reproductive system, urinary bladder, and digestive system are made up of smooth muscles. These muscles show no branching and taper towards the ends. The absence of sarcomeres in the cells give them a smooth appearance. The autonomous motor neurons run across these muscles and hence they are involuntary in nature. So, it is incorrect.

Option (d) is given as all the above. The smooth muscles and the cardiac muscles are involuntary in nature, therefore all of the above cannot be chosen as an option. So, it is incorrect.

Hence, options (b), (c), and (d) are incorrect.