Which type of cell of the CNS is phagocytic?
A. Ependymal cells
B. Satellite cells
C. Oligodendrocytes
D. Microglia
Answer: D
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In an experimental situation, a virus is injected into a rabbit and the rabbit is allowed to make antibodies for the viral antigen. These antibodies are then removed from the rabbit plasma and injected into a human to help combat the same viral disease. This is an example of __________.
A) natural immunity. B) innate immunity. C) passive immunization. D) active immunization. E) autoimmunity.
The ________ veins drain the testes in males.
A. suprarenal B. renal C. testicular D. ovarian E. mesenteric
Which of the following occurs in the formation of mineralized bone matrix?
A. Blood calcium is elevated. B. Hydrogen ions form an acid environment in bone matrix. C. Ca2+ is actively transported from bone matrix to the blood. D. The protein components of bone matrix are digested. E. Osteoblasts form collagen and proteoglycans.
Skeletal muscle is described as striated. what does that mean?
What will be an ideal response?