What is the function of the middle layer of the uterine wall?
To ensure that the uterus is securely connected to the supporting ligaments
To allow the uterus to shed tissue during menstruation
To allow the uterus to contract during childbirth to expel the fetus
To provide the uterus with adequate space to grow a fetus
The Correct Answer is C
A. To ensure that the uterus is securely connected to the supporting ligaments: This is not the primary function of the middle layer (myometrium); rather, the supporting ligaments provide stability to the uterus.
B. To allow the uterus to shed tissue during menstruation: This is primarily the function of the endometrium, the inner layer of the uterine wall.
C. To allow the uterus to contract during childbirth to expel the fetus: The middle layer, known as the myometrium, is composed of smooth muscle that contracts during labor to help expel the fetus.
D. To provide the uterus with adequate space to grow a fetus: While the uterine structure allows for fetal growth, the myometrium’s primary role is in contractions rather than providing space.
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Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is C
Explanation
A. Pons: The pons is involved in regulating the rate and depth of breathing but is not the primary site affected by pyrogens for temperature regulation.
B. Cerebral cortex: The cerebral cortex is responsible for higher-order functions like reasoning and sensory perception but does not directly regulate body temperature in response to pyrogens.
C. Hypothalamus: The hypothalamus acts as the body’s thermostat and is directly affected by pyrogens, leading to the elevation of body temperature (fever) as part of the immune response.
D. Amygdala: The amygdala is primarily involved in emotion regulation and does not play a direct role in temperature regulation.
Correct Answer is B
Explanation
A. Superior vena cava: The superior vena cava carries deoxygenated blood back to the heart, and pressure here is low.
B. Ascending aorta: The ascending aorta is where blood is ejected from the left ventricle, leading to the highest pressure in the circulatory system.
C. Abdominal aorta: While the pressure is still high in the abdominal aorta, it is lower compared to the ascending aorta.
D. Pulmonary trunk: The pulmonary trunk carries blood to the lungs, and the pressure is lower compared to the systemic circulation.
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