Old red blood cells are removed from the blood by macrophages in what organ?
A) kidney
B) spleen
C) thymus
D) bone marrow
E) pancreas
Ans: B) spleen
Anatomy & Physiology
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Excessive secretion by the glands causes the bones to become brittle.
Anatomy & Physiology
Which extraembryonic structure is created as migrating mesodermal cells form a layer beneath the trophoblast, separating it from the blastocoele?
A) amnion B) placenta C) allantois D) yolk sac E) chorion
Anatomy & Physiology
The pelvic area is supplied with blood from the ________ arteries.
Fill in the blank(s) with the appropriate word(s).
Anatomy & Physiology
Blood from the lower limbs, the pelvis, and the lower abdomen is delivered to the __________.
a. hepatic portal system b. common saphenous veins c. hepatic veins d. external iliac veins
Anatomy & Physiology