Biology: Life on Earth with Physiology (11th Edition)
11th Edition
ISBN: 9780133923001
Author: Gerald Audesirk, Teresa Audesirk, Bruce E. Byers
Publisher: PEARSON
expand_more
expand_more
format_list_bulleted
Concept explainers
Videos
Question
Chapter 33.2, Problem 1TC
Summary Introduction
To determine:
The resting heart rate of a well conditioned athlete is slower than the heart rate of a less active person.
Introduction:
Heart is the muscular organ present in most animals. Heart serves as the pump to circulate the blood. The heart has four chambers. The cardiac muscles are of two types’ myocardial contractile cells and myocardial conducting cells.
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solution
Students have asked these similar questions
What are the major factors that determine the contraction of skeletal muscle? What is the role of Calcium. Identify the similarities and differences comparing skeletal muscle contraction and relaxation to cardiac muscle.
You are at the gym and doing strength training. You feel in good shape and should try to break personal records in squats. You place the bar on your back and begin to take in, that is, your motor neurons begin to send action potentials through all your motor units to the thigh muscles.
What is the contraction called when you a) bend down and b) are in good shape and can generate more force than the bar weighs c) stay standing in one and the same position without being able to push yourself up in a standing position?
Explain the role of tropomyosin in the muscle contraction process? How are the intercalated discs involved in the contraction of cardiac muscles?
Chapter 33 Solutions
Biology: Life on Earth with Physiology (11th Edition)
Ch. 33.1 - explain the major features of all circulatory...Ch. 33.1 - Why doesnt insect hemolymph need hemoglobin?Ch. 33.1 - compare open and closed circulatory systems?Ch. 33.1 - describe the functions of the vertebrate...Ch. 33.2 - Prob. 1CSCCh. 33.2 - describe the three types of vertebrate hearts and...Ch. 33.2 - Prob. 1HYEWCh. 33.2 - Prob. 1TCCh. 33.2 - Prob. 2CYLCh. 33.2 - Prob. 3CYL
Ch. 33.3 - describe each component of blood and explain its...Ch. 33.3 - Prob. 1TCCh. 33.3 - Prob. 2CYLCh. 33.3 - Prob. 2TCCh. 33.3 - explain the sequence of events during blood...Ch. 33.4 - Prob. 1CYLCh. 33.4 - Prob. 1ETCh. 33.4 - Prob. 1TCCh. 33.4 - Prob. 2CYLCh. 33.4 - Prob. 3CYLCh. 33.5 - Prob. 1CSCCh. 33.5 - Prob. 1CSRCh. 33.5 - Prob. 1CYLCh. 33.5 - Prob. 1TCCh. 33.5 - Prob. 2CYLCh. 33.5 - Prob. 3CYLCh. 33 - Prob. 1ACCh. 33 - Prob. 1FIBCh. 33 - Prob. 1MCCh. 33 - List the major structures of all circulatory...Ch. 33 - Prob. 2ACCh. 33 - Prob. 2FIBCh. 33 - Which of the following is True? a. Arteriole...Ch. 33 - Describe and compare the features of open and...Ch. 33 - The hearts pacemaker is called the (complete term)...Ch. 33 - Prob. 3MCCh. 33 - Explain how two- and three-chambered vertebrate...Ch. 33 - Prob. 4FIBCh. 33 - Prob. 4MCCh. 33 - Prob. 4RQCh. 33 - Prob. 5FIBCh. 33 - Which of the following is true of blood pressure?...Ch. 33 - Prob. 5RQCh. 33 - Prob. 6FIBCh. 33 - Prob. 6RQCh. 33 - Lymph is ___________ that has entered lymphatic...Ch. 33 - Prob. 7RQCh. 33 - Prob. 8RQCh. 33 - Describe the cardiac cycle, and relate the...Ch. 33 - Prob. 10RQCh. 33 - Prob. 11RQCh. 33 - Prob. 12RQCh. 33 - In what way do veins and lymphatic vessels...
Knowledge Booster
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, biology and related others by exploring similar questions and additional content below.Similar questions
- A smooth, sustained contraction from rapid stimulation of skeletal muscle fibers is calledarrow_forwardIn cardiac muscle, which ion serves both to depolarize the cells and as the essential link to myocyte contraction (the troponin/tropomyosin part)? a-Na+ b-Ca+ c-Ca2+ d-Cl-arrow_forwardIf the boxer wanted to be more confident and less stressed as he entered the fight, a good strategy would be to ________. Please refer to the following art to answer the following question. If the boxer wanted to be more confident and less stressed as he entered the fight, a good strategy would be to ________. assume a power pose for a period of time before the fight drink milk to increase the amount of calcium in his blood take iodide tablets to insure that sufficient thyroxin is produced eat a large amount of carbohydrates to be sure glucose is properly regulatedarrow_forward
- When the alary muscles contract, the hemolymph is forced through the aorta into the head. Upon relaxation, the hemolymph enters the heart through the ostia. Once the hemolymph leaves the aorta, it fills the perineural and perivisceral sinuses, bathing the internal organs at the same time. Present your understanding of this concept through a diagram in the activity worksheet.arrow_forwardWhich of the following factors can help to increase contractile force? small load large muscle fibers predominance of slow oxidative fibers tetanic contraction large number of muscle fibers activated due to recruitment of motor unitsarrow_forwardWhich of the following alters the force of skeletal muscle contraction? the frequency of stimulation does NOT alter the force of skeletal muscle contraction alters the force of skeletal muscle contraction the size of the fibers being stimulated does NOT alter the force of skeletal muscle contraction alters the force of skeletal muscle contraction the number of muscle fibers stimulated does NOT alter the force of skeletal muscle contraction alters the force of skeletal muscle contraction the length- tension relationship of the muscle does NOT alter the force of skeletal muscle contraction alters the force of skeletal muscle contractionarrow_forward
- The changes related to muscle mobility are the most obvious in older adult. There can be measurable differences in muscle strength, endurance, range of motion, coordination, elasticity, and flexibility of connective tissue. Regular exercise is necessary to prevent a decrease in muscle strength. Exercise helps to strengthen muscles and keeps joints, tendons, and ligaments more flexible, allowing for a more active lifestyle. Please research and describe some activities you could recommend to an elderly patient to stay active to help them maintain muscle massarrow_forwardWhich of the following choices best summarizes excitation-contraction coupling? A series of events in which an action potential triggers the release of chemical messengers A series of events in which actin binds myosin to enact contraction A series of events in which an electrical stimulus is conveyed to a muscle fiber to enact contraction A series of events in which calcium gradients are used to convey a signal to the muscle fiber to enact contractionarrow_forwardAs you fatigue, the force of your muscles decreases. What physiological processes explain the decline in strength(be specific)?arrow_forward
- Muscle contraction is not the only process controlled in temperature-regulating reflexes. True or false?arrow_forwardWhy can we say that cardiac muscle contraction is graded?arrow_forwardFigure 38.37 Which of the following statements about muscle contraction is true? The power stroke occurs when ATP is hydrolyzed to ADP and phosphate. The power stroke occurs when ADP and phosphate dissociate from the myosin head. The power stroke occurs when ADP and phosphate dissociate from the actin active site. The power stroke occurs when Ca2+ binds the calcium head.arrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
Human Biology (MindTap Course List)BiologyISBN:9781305112100Author:Cecie Starr, Beverly McMillanPublisher:Cengage Learning
Human Physiology: From Cells to Systems (MindTap ...BiologyISBN:9781285866932Author:Lauralee SherwoodPublisher:Cengage Learning
Biology 2eBiologyISBN:9781947172517Author:Matthew Douglas, Jung Choi, Mary Ann ClarkPublisher:OpenStax
Human Biology (MindTap Course List)
Biology
ISBN:9781305112100
Author:Cecie Starr, Beverly McMillan
Publisher:Cengage Learning
Human Physiology: From Cells to Systems (MindTap ...
Biology
ISBN:9781285866932
Author:Lauralee Sherwood
Publisher:Cengage Learning
Biology 2e
Biology
ISBN:9781947172517
Author:Matthew Douglas, Jung Choi, Mary Ann Clark
Publisher:OpenStax
GCSE PE - ANTAGONISTIC MUSCLE ACTION - Anatomy and Physiology (Skeletal and Muscular System - 1.5); Author: igpe_complete;https://www.youtube.com/watch?v=6hm_9jQRoO4;License: Standard Youtube License