(b) SA node, AV node, bundle of His, Purkinje fibers - ANSWER-In what order does the
impulse for depolarization travel through the heart?
(a) AV node, SA node, bundle of His, Purkinje fibers
(b) SA node, AV node, bundle of His, Purkinje fibers
(c) SA node, AV node, Purkinje fibers, bundle of His
(d) AV node, SA node, Purkinje fibers, bundle of His
(a) Pylorus - ANSWER-The muscular sphincter located between the stomach and the
duodenum is the:
(a) Pylorus
(b) Cardia
(c) Chyme
(d) Rugae
(a) Threshold - ANSWER-When a stimulus is strong enough to cause complete
depolarization, it has reached:
(a) Threshold
(b) Repolarization
(c) Refractory period
(d) Action potential
,(b) Stomach - ANSWER-Smooth muscles can be found in the:
(d) Oxytocin - ANSWER-In dairy cattle, the teats and udder are gently washed before
milking to stimulate the release of one of the following, to stimulate milk letdown
(d) A common passage for fecal, urinary, and reproductive systems - ANSWER-In birds,
the cloaca is:
(a) An appendage suspended from the head
(b) A blind sac at the distal end of the jejunum
(c) A cleft in the hard palate
(d) A common passage for fecal, urinary, and reproductive systems
(d) Femoral vein - ANSWER-All of the following major vessels contribute to blood
flowing into the cranial vena cava except for the:
(b) Tympanic membrane - ANSWER-The eardrum is also called the:
(a) Pinna
(b) Tympanic membrane
(c) Eustachian tubes
(d) Cochlea
(c) Carry oxygen to the tissues - ANSWER-The function of the red blood cell is to:
(a) Provide defense from foreign invaders
(b) Act as a phagocyte
(c) Carry oxygen to the tissues
(d) Respond to the need for clotting
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