Which of the following physiological responses occurs in response to a decrease in blood pressure?
Decrease in sodium reabsorption
Dilation of the afferent arteriole
Constriction of the efferent arteriole
Release of renin
The Correct Answer is D
a. Decrease in sodium reabsorption: This would lead to further lowering of blood pressure, which is not a compensatory response.
b. Dilation of the afferent arteriole: This typically increases glomerular filtration rate but is not a primary response to decreased blood pressure.
c. Constriction of the efferent arteriole: This response helps to increase glomerular pressure but is secondary to other mechanisms.
d. Release of renin: Renin is released by the kidneys in response to low blood pressure, initiating the renin-angiotensin-aldosterone system (RAAS) to increase blood pressure by conserving sodium and water and constricting blood vessels.
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Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is C
Explanation
a. Glycoproteins: Glycoproteins are proteins that have carbohydrate groups attached to them and are not related to glycogen breakdown.
b. Glycosaminoglycan: Glycosaminoglycans are long polysaccharide molecules involved in building connective tissues, not in glycogen catabolism.
c. Glycogenolysis: Correct. Glycogenolysis is the process of breaking down glycogen into glucose to be used for energy.
d. Gluconeogenesis: Gluconeogenesis is the process of producing glucose from non-carbohydrate sources, not the breakdown of glycogen.
Correct Answer is C
Explanation
a: Insertion site - This refers to the attachment point of a muscle tendon to a bone, not the point of contact between nerve and muscle.
b: Origin site - This refers to the attachment point of a muscle tendon to a stationary bone, not the neuromuscular junction.
c. Neuromuscular junction: The neuromuscular junction is the specialized synapse between a motor neuron and a muscle fiber. It is where the nerve impulse is transmitted from the motor neuron to the muscle fiber, resulting in muscle contraction
d: Interneuron - Interneurons are neurons that transmit signals between other neurons; they are not directly involved in the neuromuscular junction.
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