Red blood cell formation is triggered by___________ that causes the release of the
hormone_________ from the ___________.
a) loss of iron, hemopoietin; bone marrow
b) loss of red blood cells, calcitonin, parathyroid gland
c) hypoxemia, erythropoietin; liver and kidney
d) loss of hemoglobin, cytokine; leukocytes
e) hunger, thyroxine; erythrocytes correct answers C
The term "isovolumetric relaxation" refers to
a) the point in time when the ventricles are in diastole and no blood is moving
b) the point in time when the atria are in systole and blood moves into the ventricles
c) the point in time when the ventricles are in systole and no blood is moving
d) the point in time when the ventricles are in systole and blood is ejected from the heart
e) none of the above correct answers A
A patient has suffered massive blood loss. Assuming flow remains constant, how will the system
respond?
a) the patient will die before their body can adjust
b) the sympathetic nervous system will increase activity to the muscular arteries
c) the parasympathetic nervous system will increase activity to slow the heart rate
d) the somatic nervous system will activate skeletal muscle to increase venous return
e) b, c and d will work to restore homeostasis correct answers B
Which of the following glands is a target for the sympathetic nervous system?
a) adrenal cortex
b) adrenal medulla
c) gonads
d) a and b
e) b and c correct answers B
For hemostasis to occur
a) fibrin must be converted to fibrinogen catalysed by the enzyme thrombin
b) thrombin must be converted to fibrin catalysed by the enzyme fibrinogen
c) fibrinogen must be converted to fibrin catalysed by the enzyme thrombin
d) fibrin must be converted to thrombin catalysed by the enzyme fibrinogen
e) none of the above correct answers C
Negative feedback inhibition occurs when
a) thyrotropin-releasing hormone (TRH) targets the thyroid gland.
b) thyroid hormone (TH) targets the anterior pituitary and the hypothalamus
c) thyrotropin-releasing hormone (TRH) causes the anterior pituitary to release thyroid-
stimulating hormone (TSH).
d) thyroid-stimulating hormone (TSH) targets the thyroid gland.
e) none of the above. correct answers B
, Carbonic anhydrase (CAH) is an enzyme _______.
a) located in an erythrocyte, the parietal cell and the CSF
b) that converts carbonic acid (H2CO3) into water and CO2
c) necessary for glycolysis d) two of the above e) all of the above correct answers D
Respiratory reflexes are controlled by sensory input from ___________
a) the autonomic nervous system b) stretch receptors in the walls of the lungs
c) Baroreceptors d) two of the above e) all of the above correct answers D
A man's heart suddenly stops. If you could record his diastolic blood pressure it would be
between_____ mmHg.
a) 120 and 80 b) 80 and 10 c)zero...he's dead. correct answers B
Anti-diuretic hormone (ADH)
a) is released by the posterior pituitary gland
b) decreases urine production
c) targets the liver
d) a and b
e) none of the above correct answers D
Brunner's glands__________________.
a) are found in the mucosa of the small intestine and secrete gastrin
b) are found in the sub-mucosa of the duodenum and secrete alkaline mucous
c) are found in the sub-mucosa of the ileum and secrete hydrochloric acid
d) are found in the mucosa of the stomach and secrete pepsin
e) none of the above correct answers B
The chief cell is specially designed to create pepsinogen through a process called
a) secretion b) protein synthesis c) glycolysis d) hydrolysis e) two of the above correct answers B
These smooth muscle contractions churn food as it moves through the digestive tract
a) peristalsis b) segmentation c) isometric d) none of the above correct answers B
The "plateau phase" of the myocyte action potential is caused by __________ influx
a) fast Na+ b) slow K+ c) slow Ca++ d) fast K+ d) none of the above correct answers C
If the baroreceptors increase their activity (increased frequency of action potentials) to the
medulla in response to a change in blood pressure, the output response from the medulla would
be to______ to return the pressure back to homeostasis. Assume a constant resistance.
a) increase sympathetic stimulation to the SA and AV nodes and heart muscle fibers
b) increase parasympathetic stimulation to the SA and AV nodes
c) decrease parasympathetic stimulation to the SA and AV nodes
d) two of the above are the correct responses
e) none of the above are the correct responses correct answers B