A+P 2 Lecture test 1

Which valve separates the left atrium from the left ventricle? a) mitral b) tricuspid c) pulmonary d) aortic

a) mitral

what is the correct type of stimuli involved in the feedback homeostatic regulation of hormone production for the following situation: Would stimulate the quickest release of endocrine hormone. a) neural b) hormonal c) tropic hormonal

a) neural

The nervous system releases chemicals termed ______________, while the endocrine releases ______________? a) neurotransmitters, hormones b) hormones, neurotransmitters

a) neurotransmitters, hormones

The secretion of thyroid hormones is controlled by __________ . a) TSH from the hypothalamus b) TSH from the anterior pituitary c) thyroxine from the anterior pituitary d) thyroglobulin from the thyroid's parafollicular cells

b) TSH from the anterior pituitary

Which chamber initially receives blood from the systemic circuit? a) left ventricle b) right atrium c) left atrium d) right ventricle

b) right atrium

What would happen to a body cell that doesn't have a specific receptor for a specific hormone that is released and circulating in the blood? a) The cell would decrease its physiological response to that hormone b) The cell would increase its physiological response to that hormone c) The cell would not respond to the hormone

c) The cell would not respond to the hormone

What would happen to heart rate in a person with an epinephrine secreting tumor (called a pheochromocytoma)? Epinephrine is one of the transmitters of the sympathetic nervous system. a) heart rate will not change b) heart rate will decrease c) heart rate will increase

c) heart rate will increase

What will happen to the level of exercise tolerance in a person whose heart is being paced by the AV node? a) level of exercise will increase b) level of exercise will stay the same c) level of exercise will decrease

c) level of exercise will decrease

You are now in the Right Ventricle. As the ventricle goes into systole, through which valve will the blood flow next? a) bicuspid valve b) tricuspid valve c) pulmonary valve d) aortic valve

c) pulmonary valve

12. Which of the following is an anterior pituitary hormone? a) ADH b) oxytocin c) cortisol d) TSH

d) TSH

How do functions of the endocrine system differ from functions of the nervous systems? a) Endocrine glands secrete signaling molecules, neurons do not. b) The endocrine system controls functions of the body. c)Endocrine glands are found outside of the central nervous system, neurons are not. d) The molecules secreted by endocrine glands are typically active longer and travel further than those secreted by neurons.

d) The molecules secreted by endocrine glands are typically active longer and travel further than those secreted by neurons.

The influx of which ion accounts for the plateau phase? a) sodium b) potassium c) chloride d) calcium

d) calcium

Which of the following is not important in preventing backflow of blood? a) chordae tendineae b) papillary muscles c) AV valves d)endocardium

d) endocardium

Which of the following responses s not part of the fight-or-flight response? a) pupil dilation b) increased oxygen supply to the lungs c) suppressed digestion d) reduced mental activity

d) reduced mental activity

When blood calcium levels are low, PTH stimulates __________ . a) urinary excretion of calcium by the kidneys b) a reduction in calcium absorption from the intestines c) the activity of osteoblasts d) the activity of osteoclasts

d) the activity of osteoclasts