Loss of equilibrium and motor coordination would most likely be related to a lesion in which structure?
A. Pons
B. Medulla oblongata
C. Pituitary gland
D. Cerebellum
E. Limbic system
Answer: D
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Why are there so many phagocytic cells (in lymph nodes and the liver, for example) associated with the digestive system?
A. They stimulate contractions of the tunica muscularis. B. They stimulate proliferation of stem cells. C. They remove bacteria and other foreign material ingested with food. D. They can transform into other cell types under the appropriate hormonal stimulation. E. They stimulate digestive enzyme production.
The movement of rotating a limb toward the anterior surface of the body is called ________ rotation
A) frontal B) external C) lateral D) outward E) medial
During gastrulation,
A) the blastomeres fuse. B) the placenta penetrates the endometrium. C) three germ layers are formed. D) cells from the hypoblast move to the epiblast. E) the neural tube closes.
What structure in a muscle fiber acts as a calcium reservoir or storage site?
a. Sarcoplasmic reticulum b. Sarcoplasm c. Myofibrils d. Transverse tubules