PGY Exam 3 Questions with Verified Solutions Graded A+
The sphincter that is composed of striated muscle and is normally tonically contracted is the: -
Answers upper esophageal sphincter
During a normal, typical swallow: - Answers tactile receptors in the pharynx are activated.
Gastric reflux disease is made worse (exacerbated) by: - Answers increasing the plasma levels
of progesterone.
Gastric acid secretion: - Answers is strongly stimulated by histamine
The absorption of fat soluble vitamins in an otherwise healthy individual can be impeded by: -
Answers a deficiency of pancreatic lipases
The absorption and digestion processes for carbohydrates, proteins and fats are SIMILAR in
that all 3 ingested substrates: - Answers are usually completely absorbed
The special adaptations of the gut that increase surface area and passive diffusion are: -
Answers plications, villi and microvilli
The enzyme that is important in the absorption of ingested glucose is: - Answers Na+/K+
ATPase
Smooth muscle is similar to skeletal muscle in that both have __________ . Smooth muscle is
simlar to cardiac muscle in that both have __________. Smooth muscle differs from both other
types in that it has no __________. - Answers actin and myosin; gap junctions; striations
The mixing movement in the colon is _______. - Answers Haustration
___________ usually result(s) in a heart murmur. - Answers Septal defects in the heart
Most of the blood volume in a person at rest is contained in the _______. - Answers Venous
System
A person that has a lower than normal hematocrit will have a red blood cell volume of ____ mL in
100 mL of blood. - Answers 30
Platelets are generated from which cells? - Answers Megokaryocytes
Action potentials in the contractile myocardium have _________. - Answers extended plateau
phases caused by Ca++ entry through voltage-gated Ca++ channels
Parasympathetic stimulation will _____ the firing rate of sinoatrial action potentials and ________
heart rate. - Answers decrease, decrease
The closing of the semilunar valve leads to this heart sound ____. - Answers dub
The sphincter that is composed of striated muscle and is normally tonically contracted is the: -
Answers upper esophageal sphincter
During a normal, typical swallow: - Answers tactile receptors in the pharynx are activated.
Gastric reflux disease is made worse (exacerbated) by: - Answers increasing the plasma levels
of progesterone.
Gastric acid secretion: - Answers is strongly stimulated by histamine
The absorption of fat soluble vitamins in an otherwise healthy individual can be impeded by: -
Answers a deficiency of pancreatic lipases
The absorption and digestion processes for carbohydrates, proteins and fats are SIMILAR in
that all 3 ingested substrates: - Answers are usually completely absorbed
The special adaptations of the gut that increase surface area and passive diffusion are: -
Answers plications, villi and microvilli
The enzyme that is important in the absorption of ingested glucose is: - Answers Na+/K+
ATPase
Smooth muscle is similar to skeletal muscle in that both have __________ . Smooth muscle is
simlar to cardiac muscle in that both have __________. Smooth muscle differs from both other
types in that it has no __________. - Answers actin and myosin; gap junctions; striations
The mixing movement in the colon is _______. - Answers Haustration
___________ usually result(s) in a heart murmur. - Answers Septal defects in the heart
Most of the blood volume in a person at rest is contained in the _______. - Answers Venous
System
A person that has a lower than normal hematocrit will have a red blood cell volume of ____ mL in
100 mL of blood. - Answers 30
Platelets are generated from which cells? - Answers Megokaryocytes
Action potentials in the contractile myocardium have _________. - Answers extended plateau
phases caused by Ca++ entry through voltage-gated Ca++ channels
Parasympathetic stimulation will _____ the firing rate of sinoatrial action potentials and ________
heart rate. - Answers decrease, decrease
The closing of the semilunar valve leads to this heart sound ____. - Answers dub
