Unit 2 Quizzes Flashcards
Cells or organs that selectively remove, concentrate, or alter materials in the blood and then secrete them back into the body are called: Select one: a. glands. b. neurotransmitters. c. hormones. d. neoplasms.
a. glands.
The ilium is defined as the: Select one: a. lower part of the small intestine. b. bony prominence of the pelvis. c. ligament that overlies the femoral vessels. d. structure that overlies the bladder.
b. bony prominence of the pelvis.
When oxygen levels are low or absent, the cells revert to a process of: Select one: a. anaerobic anabolism. b. anaerobic metabolism. c. aerobic metabolism. d. aerobic catabolism.
b. anaerobic metabolism.
All of the following are voluntary muscles, except: Select one: a. striated muscle. b. skeletal muscle. c. somatic muscle. d. smooth muscle.
d. smooth muscle.
The movement of a solute from an area of higher concentration to an area of lower concentration is called: Select one: a. endocytosis. b. diffusion. c. exocytosis. d. osmosis.
b. diffusion
The second heart sound (S2) represents: Select one: a. closure of the aortic valve. b. closure of the semilunar valves. c. closure of the atrioventricular valves. d. closure of the pulmonic valve.
b. closure of the semilunar valves.
The respiratory center of the brain is located in the: Select one: a. medulla. b. cerebellum. c. cerebrum. d. hypothalamus.
a. medulla.
Detoxification of toxic substances, production of bile, and production of certain clotting factors are all functions of the: Select one: a. pancreas. b. liver. c. kidneys. d. gallbladder.
b. liver.
The most common solvent in the body, in which solutes or other substances will dissolve, is: Select one: a. water. b. bile. c. blood. d. plasma.
a. water.
The hypoxic drive, a backup system to control breathing, is stimulated when: Select one: a. arterial PaO2 levels decrease. b. arterial PaCO2 levels decrease. c. arterial PaO2 levels increase. d. arterial PaCO2 levels increase.
a. arterial PaO2 levels decrease.
Tidal volume is defined as the volume of air that:
Select one:
a. is exhaled from the lungs following a forceful exhalation.
b. is moved into or out of the lungs during a single breath.
c. is moved in or out of the lungs following maximal expiration.
d. remains in the lungs following expiration.
b. is moved into or out of the lungs during a single breath.
How do the blood vessels of the skin respond to cold temperatures?
Select one:
a. Constriction, which diverts blood away from the skin
b. Constriction, which pulls blood to the skin’s surface
c. Dilation, which diverts blood away from the skin
d. Dilation, which pulls blood to the skin’s surface
a. Constriction, which diverts blood away from the skin
Adrenocorticotropic hormone (ACTH) targets the adrenal cortex and causes it to secrete: Select one: a. adrenaline. b. cortisol c. calcitonin. d. antidiuretic hormone.
b. cortisol
Chemicals that become ionic conductors when dissolved in water are called: Select one: a. ions. b. exocytes. c. endocytes. d. electrolytes.
d. electrolytes.
The movement of a substance against a concentration or gradient, such as the cell membrane, is called: Select one: a. crenation. b. osmosis. c. facilitated diffusion. d. active transport.
d. active transport.
In response to shock or stress, sympathetic nervous system stimulation causes: Select one: a. increased gastrointestinal function. b. vasoconstriction. c. shunting of blood to the extremities. d. slowing of the heart rate.
b. vasoconstriction.
Phagocytosis is the process by which: Select one: a. phagocytes are destroyed. b. monocytes digest microbes. c. phagocytes are produced. d. microbes destroy monocytes.
b. monocytes digest microbes.
Which of the following physiologic responses would you expect to see in a patient with a pH of 7.50? Select one: a. Bicarbonate retention b. Increased respirations c. Decreased respirations d. Hydrogen ion excretion
c. Decreased respirations
The shoulder joint is a ball-and-socket joint where the humeral head articulates with the: Select one: a. acetabulum. b. glenoid fossa. c. acromion process. d. popliteal fossa.
b. glenoid fossa.
If the concentration of H+ increases, the pH of the blood will: Select one: a. decrease. b. increase, then decrease. c. remain unchanged. d. increase.
a. decrease.
The normal pH of the human body ranges from: Select one: a. 7.25–7.30. b. 7.60–7.75. c. 7.35–7.45. d. 7.50–7.55.
c. 7.35–7.45.
A buffer is a substance that can absorb or donate: Select one: a. sodium. b. bicarbonate. c. hydrogen ions d. water.
c. hydrogen ions
The atrioventricular (AV) valves of the heart include the: Select one: a. tricuspid and mitral. b. mitral and aortic. c. tricuspid and pulmonic. d. bicuspid and aortic.
a. tricuspid and mitral.
The movement of a solvent from an area of low solute concentration to an area of high solute concentration is called: Select one: a. diffusion. b. passive transport. c. osmosis. d. crenation.
c. osmosis.