Biology 2e
2nd Edition
ISBN: 9781947172517
Author: Matthew Douglas, Jung Choi, Mary Ann Clark
Publisher: OpenStax
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Textbook Question
Chapter 38, Problem 38CTQ
Skeletal muscles can only produce a mechanical force as they are contracted, but a leg flexes and extends while walking. How can muscles perform this task?
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Skeletal muscles can only produce a mechanical force as they are contracted, but a leg flexes and extends while walking. How can muscles perform this task?
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Chapter 38 Solutions
Biology 2e
Ch. 38 - Figure 38.19 Which of the following statements...Ch. 38 - Figure 38.37 Which of the following statements...Ch. 38 - Figure 38.38 The deadly nerve gas Sarin...Ch. 38 - The forearm consists of the radius and ulna radius...Ch. 38 - The pectoral girdle consists of the: clavicle and...Ch. 38 - All of the following are groups of vertebrae...Ch. 38 - Which of these is a facial bone? frontal occipital...Ch. 38 - Which of the following is not a true statement...Ch. 38 - The Haversian canal: is arranged as rods or plates...Ch. 38 - The epiphyseal plate: is arranged as rods or...
Ch. 38 - The cells responsible for bone resorption are...Ch. 38 - Compact bone is composed of trabeculae compacted...Ch. 38 - Osteoporosis is a condition where bones become...Ch. 38 - While assembling a skeleton of a new species, a...Ch. 38 - Synchondroses and symphyses are synovial joints...Ch. 38 - The movement of bone away from the midline of the...Ch. 38 - Which of the following is not a characteristic of...Ch. 38 - The elbow is an example of which type of joint?...Ch. 38 - A high ankle sprain iis an injury caused by over...Ch. 38 - In relaxed muscle, the myosin-binding site on...Ch. 38 - The cell membrane of a muscle fiber is called a...Ch. 38 - The muscle relaxes if no new nerve signal arrives....Ch. 38 - The ability of a muscle to generate tension...Ch. 38 - Botulinum toxin causes flaccid paralysis of the...Ch. 38 - What are the major differences between the male...Ch. 38 - What are the major differences between the pelvic...Ch. 38 - Both hydrostatic and exoskeletons can protect...Ch. 38 - Scoliosis is a medical condition where the spine...Ch. 38 - What are the major differences between spongy bone...Ch. 38 - What are the roles of osteoblasts, osteocytes, and...Ch. 38 - Thalidomide was a morning sickness drug given to...Ch. 38 - What movements occur at the hip joint and knees as...Ch. 38 - What movements) occur(s) at the scapulae when you...Ch. 38 - Describe the joints and motions involved in taking...Ch. 38 - How would muscle contractions be affected if ATP...Ch. 38 - What factors contribute to the amount of tension...Ch. 38 - What effect will low blood calcium have on...Ch. 38 - Skeletal muscles can only produce a mechanical...
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- You are training athletes for the 100-meter dash. They need muscles specialized for speed and strength, not endurance. What muscle characteristics would your training regimen aim to develop? How would you alter it to train a long-distance swimmer?arrow_forwardHow do actin and myosin interact in a sarcomere to bring about muscle contraction? What roles do ATP and calcium play?arrow_forwardMuscles provide the force for moving body parts.arrow_forward
- Explain why muscles can only pull, not push.arrow_forwardWhy might stretching a cramping muscle INCREASE the cramping, as well as why would contracting the opposing muscle rapidly improve the situation?arrow_forwardAn isometric exercise is one in which the joint angle does not change during the application of muscle force. For instance, you can join your hands together, pushing down with one hand and pushing up with the other. In each arm, the muscles that provide the force are connected to the bones of the arm by tendons. If you increase the forces but keep the angles the same, the muscles will still contract. Explain how this is possible.arrow_forward
- In my study guide, I have been going through notes and I am unsure of the topic on muscle arrangements. The main concept from the chapter on the study guide states "Describe the way that muscles are arranged in groups with complementary actions at a joint." So, how are the muscles are arranged by groups?arrow_forwardHow are circular and oblique muscles different in terms of shape and function? How would I know if I was looking at a rectus or oblique muscle? What characteristics would I look for? Why can’t muscles move without calcium? What does calcium do to allow muscles to move? There are multiple possible answers. How are the fast twitch and slow twitch muscles different? Briefly describe each. Where can I find the fast twitch and the slow twitch muscles?arrow_forwardWhich of the following is found on the outside of skeletal muscles? a). Myofibrilsb). Sheathc). Bundlesd). Sarcomerearrow_forward
- Do you think flexibility exercises work to make tendons or ligaments more flexible? Why would flexibility be so important to musculoskeletal health?arrow_forwardYou are training athletes for the 100-meter dash. They need muscles specialized for speed and strength, not endurance. What muscle characteristics would your training regimen aim to develop? How would you alter it to train a long-distance swimmer?arrow_forwardDescribe how muscles generate different levels of contractive forcearrow_forward
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