The helmet-like region of the sperm that is similar to a large lysosome and assists penetration of the egg is called the ________
A) flagellum
B) midpiece
C) spermatid
D) acrosome
D
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The point where nerve pathways cross, resulting in the right half of the brain controlling the left half of the body and vice versa, is in the medulla oblongata.
Answer the following statement true (T) or false (F)
When competing in a swimming meet, participants release fuel energy from their muscles. What does that activity produce?
A. Red blood cells B. Glucose C. More energy D. Heat
Homeostasis is maintained by which three mechanisms?
A. Vascular spasm , platelet plug , fibrin clots B. Von Willebrand's factor, fibrin, platelets C. Factor VIll, factor VIl, factor II Xp. D. Fibrin, platelets, hemoglobin
Autonomic motor neurons are subdivided into the
A) visceral and somatic divisions. B) visceral and enteric divisions. C) central and peripheral divisions. D) somatic and enteric divisions. E) sympathetic and parasympathetic divisions.