B lymphocytes develop immunocompetence in the ________.
A) thymus
B) spleen
C) bone marrow
D) lymph nodes
C) bone marrow
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Most of the blood leaving the brain passes through one of the dural sinuses and leaves the skull in one of the ________, descending parallel to the common carotid artery in the neck.
A) external jugular veins B) superior sagittal sinuses C) vertebral veins D) internal jugular veins E) cephalic veins
If you were to palpate the small intestine at the hypogastric region of a normal, healthy patient, which portion of their small intestine would you be feeling?
A) jejunum B) ileum C) duodenum
When a chemical messenger has a short half-life, it means that
A. it will not have an extremely prolonged effect on target cells. B. it will not be eliminated quickly from the blood.
The first location of long bone formation begins in an area called (the)
A) primary ossification center. B) Haversian system. C) spicule. D) secondary ossification center. E) trabecula.