CAMPBEL BIOLOGY:CONCEPTS & CONNECTIONS
10th Edition
ISBN: 9780136538820
Author: Taylor
Publisher: INTER PEAR
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Chapter 20, Problem 8TYK
The diaphragm is a large sheet of muscle that helps move air in and out of your lungs. Breathing is automatically controlled by the brain, but you can choose to hold your breath or breath deeper. What kind of muscle do you suppose makes up the diaphragm? (Explain your answer.)
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Chapter 20 Solutions
CAMPBEL BIOLOGY:CONCEPTS & CONNECTIONS
Ch. 20 - Connecting the Concepts 1. There are several key...Ch. 20 - True or false? Each cell in the human body is...Ch. 20 - Prob. 3TYKCh. 20 - Negative-feedback mechanisms are a. most often...Ch. 20 - Briefly explain how the structure of each of these...Ch. 20 - Describe ways in which the bodies of complex...Ch. 20 - Which of the following best illustrates...Ch. 20 - The diaphragm is a large sheet of muscle that...Ch. 20 - Prob. 9TYKCh. 20 - Prob. 10TYK
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- Why do you think a person is able to perform anaerobic exercise (such as lifting and holding a heavy weight) only briefly but can sustain aerobic exercise (such as walking or swimming) for long periods? (Hint: Muscles have limited energy stores.)arrow_forwardContraction of the external intercostal muscles causes which of the following to occur? Group of answer choices a. thoracic cavity volume to increase b. diaphragm to move downward c. rib cage to compress d. ribs and sternum to move downwardarrow_forwardA researcher is investigating the composition of muscle tissue in thegastrocnemius muscles (in the calf of the leg) of athletes. She takesa needle biopsy from the muscle and determines the concentration(or enzyme activity) of several substances. Describe the major differences this researcher sees when comparing the muscles of athletes whoperform in the following events: 100-meter dash, weight lifting, and10,000-meter runarrow_forward
- Compare and contrast human muscles with those of a frog, bird, and snake. Explain the differences and similarites between: A. Human muscles vs. Frog muscles B. Human muscles vs. Bird muscles C. Human muscles vs. Snake musclesarrow_forwardIn the paragraph choose one word from each parenthesis set according to the sentences before and after. Under conditions where normal breathing isn’t sufficient, other muscles will assist the diaphragm in changing the volume of the thoracic cavity. A muscle that increases the volume of the thoracic cavity will cause pressure to (increase/decrease) which means that it is helping with forced (inspiration/expiration). A muscle that decreases the volume of the thoracic cavity will cause pressure to (increase/decrease) which means that it is helping with forced (inspiration/expiration).arrow_forwardPaola is a 3-year-old girl with a disease that reduces the ability of her mitochondria to generate ATP. Explain the specific effects of this disease on the ability of Paola’s muscles to function properly. What other tissues and organs are likely to be affected by her disease, and why?arrow_forward
- Myoglobin and hemoglobin differ in... Question 30 options: the type of prosthetic group used their total oxygen binding capacity the number of sub-units present A and B B and Carrow_forwardNeck muscles are used to tilt its head in an adorable fashion. Humans tilt their heads to express interest. But imagine how disturbing and painful it would be if your neck tilted involuntarily, without you being able to control it! Fifty-three-year-old Jose, unfortunately, knows just how debilitating this can be. Jose has a rare condition called dystonia, which is also called spasmodic torticollis. In this condition, the muscles in the neck contract involuntarily, often causing the person’s head to twist to one side. The muscles may contract in a sustained fashion, holding the head and neck in one position, or they may spasm repeatedly, causing jerky movements of the head and neck. Cervical dystonia is painful and can significantly interfere with individuals' ability to carry out their usual daily activities. In Jose’s case, they can no longer drive a car, because their uncontrollable head and neck movements and abnormal head positioning prevent them from navigating the road safely.…arrow_forwardSherrinton proposed the law of reciprocal innervation in the muslces. Which of the following is the best example of this law? A. Muscles can be programmed to act through reflex action B. As the bicepts muscle contracts, the tricepts muscle extends C. All four parts of the quadricepts muscle contract togetherarrow_forward
- This article in the image illustrates what happens when you blow just above a piece of paper. Describe what you see. What is this phenomenon called? Why does the paper move the way it does? Then, explain the role of airflow in the Myoelastic-Aerodynamic Theory of vocal fold vibration. Hint: Think about the inverse relationship between air pressure and velocity of air as discussed in our Zoom session-- increased velocity leads to decreased air pressure; what happens to the vocal folds?arrow_forwardWhen considering the movement of air into the balloons (representing the lungs), which of the following would you have to do? a. pull down on the diaphragm mimicking the contraction of the diaphragm in inspiration b. push up the diaphragm mimicking the relaxation of the diaphragm in expiration c. push up on the diaphragm mimicking the contraction of the diaphragm in expirationarrow_forwardThe movement of air out of the lungs during forceful expiration is a result of Air is forced out of the lungs due to the active contraction of the abdominal and external intercostal muscles. Air moves out of the lungs due to the passive relaxing of the diaphragm and intercostal muscles. Air is forced out of the lungs due to the active contraction of the abdominal and internal intercostal muscles. Air moves out of the lungs due to the passive elastic recoil of the chest wall and lungs.arrow_forward
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