Blood is returned to the heart from all body parts by the:
A) veins.
B) capillaries.
C) arteries.
D) aorta.
A
Explanation:
A) Correct.
B) Capillaries are the smallest blood vessels between the veins and arteries.
C) The arteries carry blood away from the heart.
D) The aorta carries blood from the left ventricle to all of the body except the lungs.
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Which of the following is incorrect pertaining to the lips?
A) They are attached by frenula to the vestibular gingiva. B) The upper and lower lips receive sensory innervation via the infraorbital nerve. C) Both lips receive blood via branches from the facial artery. D) Lymph from the lips drain to the submandibular and submental lymph nodes. E) They contain the orbicularis oris muscle.
The ventral posterolateral (VPL) nucleus of the thalamus is the site of synapse for:
A. First-order neurons of the dorsal column/medial lemniscus system. B. Second-order neurons with their cell bodies in the nucleus cuneatus and/or nucleus gracilis. C. Third-order neurons with their cell bodies in the spinal nucleus of the trigeminal cranial nerve. D. Second-order neurons with their cell bodies in the nucleus dorsalis (Clarke's nucleus). E. Third-order neuron with their cell body the lateral cuneate nucleus.
The nurse knows that an example of an aminoglycoside antibiotic is gentamycin. What is a characteristic of this drug class?
a. It requires serum drug levels for therapeutic response. b. It is used for long-term therapy. c. It is a safe agent used for short bursts of treatments for gram-negative organisms only. d. It is a safe agent used for short bursts of treatment for gram-positive organisms only.
Which symptom associated with alcohol withdrawal is considered a medical emergency?
A. nightmares B. delirium tremens C. elevated pulse and breathing rate D. profound memory gaps (blackouts)