Lymph from the lower limbs drains into which duct?
Subclavian duct
Thoracic duct
Left lymphatic duct
Right lymphatic duct
The Correct Answer is B
A. Subclavian duct: There is no specific "subclavian duct" for lymph drainage; lymphatic fluid drains into the subclavian veins.
B. Thoracic duct: The thoracic duct drains lymph from the lower limbs and the left side of the body, returning it to the circulatory system at the junction of the left subclavian and internal jugular veins.
C. Left lymphatic duct: The thoracic duct is often referred to as the left lymphatic duct but is not limited to just left drainage.
D. Right lymphatic duct: The right lymphatic duct drains lymph from the right upper quadrant of the body but does not drain lymph from the lower limbs.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is D
Explanation
A. Hymen: The hymen is a thin membrane that partially covers the vaginal opening, but it does not separate the vagina from the uterus.
B. Fundus: The fundus is the upper part of the uterus, but it does not separate the vagina from the uterus.
C. Adventitia: This is the outer layer of the uterus, but it does not serve as a separator between the vagina and uterus.
D. Cervix: The cervix is the lower part of the uterus that protrudes into the vagina and acts as a barrier separating the two structures.
Correct Answer is C
Explanation
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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