CH. 6The Cardiorespiratory, Endocrine, and Digestive Systems Flashcards
The pancreas secretes which of the following hormones?
Insulin
Which type of training would most likely lead to increased levels of testosterone, insulin-like growth factors, and growth hormone?
Overload training that is of a high intensity with limited rest periods
Which heart chamber receives deoxygenated blood and pumps it to the lungs?
Right ventricle
What mechanism is responsible for increasing the rate of heart conduction?
Activation of the sympathetic nervous system
The pathway for hormones secreted by the endocrine system may be described by which of the following?
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.
Which heart chamber receives oxygenated blood and pumps it to the body?
Left ventricle
Which of the following muscles are responsible for normal resting state (quiet) breathing?
Diaphragm
What structure in the heart transfers the electrical signal from the sinoatrial (SA) node to the atrioventricular (AV) node?
Internodal pathway
How would age and overall health affect testosterone levels among men?
A reduction in testosterone levels occurs with age, and overall health may affect the degree of change.
What is a normal respiratory rate for an adult during rest?
15 breaths per minute
Which of the following effects of the cardiovascular system occurs during exercise?
Increased ventricular filling
The cardiovascular and respiratory systems work together to remove what waste product?
Carbon dioxide
What component of breathing improves blood flow back to the heart?
Inspiration with a decrease in intrathoracic pressure
What would be considered a normal resting heart rate for a healthy sedentary person?
80 beats per minute
Which heart chamber receives deoxygenated blood and pumps it to the lungs?
Right ventricle
Abnormal breathing may be associated with which of the following effects?
Shallow rapid breaths with use of the sternocleidomastoid
Which system is comprised of the airways and lungs?
Respiratory
What anatomical heart structure is referred to as “the pacemaker of the heart”?
Sinoatrial node
What is the primary function of the large intestine?
Absorption of food and passage of waste into the rectum
What is end-diastolic volume?
The amount of blood in the ventricle before contraction
Which heart chamber gathers oxygenated blood coming to the heart from the lungs?
Left atrium
The cardiovascular and respiratory systems work together to provide the body with what gas?
Oxygen
Which component of blood is primarily responsible for clotting mechanisms?
Platelets
Where in the digestive system are most fluids absorbed?
Small intestine
