CH. 6The Cardiorespiratory, Endocrine, and Digestive Systems

Question 1

The pancreas secretes which of the following hormones?

Answer 1

Insulin

Question 2

Which type of training would most likely lead to increased levels of testosterone, insulin-like growth factors, and growth hormone?

Answer 2

Overload training that is of a high intensity with limited rest periods

Question 3

Which heart chamber receives deoxygenated blood and pumps it to the lungs?

Answer 3

Right ventricle

Question 4

What mechanism is responsible for increasing the rate of heart conduction?

Answer 4

Activation of the sympathetic nervous system

Question 5

The pathway for hormones secreted by the endocrine system may be described by which of the following?

Answer 5

The gland secretes the hormone, which travels through the bloodstream to reach a target cell, where it binds to a receptor and influences a particular action.

Question 6

Which heart chamber receives oxygenated blood and pumps it to the body?

Answer 6

Left ventricle

Question 7

Which of the following muscles are responsible for normal resting state (quiet) breathing?

Answer 7

Diaphragm

Question 8

What structure in the heart transfers the electrical signal from the sinoatrial (SA) node to the atrioventricular (AV) node?

Answer 8

Internodal pathway

Question 9

How would age and overall health affect testosterone levels among men?

Answer 9

A reduction in testosterone levels occurs with age, and overall health may affect the degree of change.

Question 10

What is a normal respiratory rate for an adult during rest?

Answer 10

15 breaths per minute

Question 11

Which of the following effects of the cardiovascular system occurs during exercise?

Answer 11

Increased ventricular filling

Question 12

The cardiovascular and respiratory systems work together to remove what waste product?

Answer 12

Carbon dioxide

Question 13

What component of breathing improves blood flow back to the heart?

Answer 13

Inspiration with a decrease in intrathoracic pressure

Question 14

What would be considered a normal resting heart rate for a healthy sedentary person?

Answer 14

80 beats per minute

Question 15

Which heart chamber receives deoxygenated blood and pumps it to the lungs?

Answer 15

Right ventricle

Question 16

Abnormal breathing may be associated with which of the following effects?

Answer 16

Shallow rapid breaths with use of the sternocleidomastoid

Question 17

Which system is comprised of the airways and lungs?

Answer 17

Respiratory

Question 18

What anatomical heart structure is referred to as “the pacemaker of the heart”?

Answer 18

Sinoatrial node

Question 19

What is the primary function of the large intestine?

Answer 19

Absorption of food and passage of waste into the rectum

Question 20

What is end-diastolic volume?

Answer 20

The amount of blood in the ventricle before contraction

Question 21

Which heart chamber gathers oxygenated blood coming to the heart from the lungs?

Answer 21

Left atrium

Question 22

The cardiovascular and respiratory systems work together to provide the body with what gas?

Answer 22

Oxygen

Question 23

Which component of blood is primarily responsible for clotting mechanisms?

Answer 23

Platelets

Question 24

Where in the digestive system are most fluids absorbed?

Answer 24

Small intestine

Question 25

What term is used to describe the premise that increased ventricular filling improves contractile force of the heart as a result of greater stretch of cardiac fibers?

Answer 25

Frank Starling Law of the Heart

Question 26

Which heart chamber gathers deoxygenated blood returning to the heart from the superior and inferior vena cava veins?

Answer 26

Right atrium

Question 27

Which of the following hormones have an anabolic function and have been shown to increase up to 48 hours following resistance training?

Answer 27

Insulin-like growth factor (IGF)

Question 28

Which component of blood is primarily responsible for transporting oxygenated blood throughout the body?

Answer 28

Red blood cells

Question 29

Where in the heart is the sinoatrial node located?

Answer 29

Right atrium