Depolarization of the oocyte plasma membrane occurs when the first sperm attaches to the integrin ?6?1. This is called the
A. slow block to polyspermy.
B. acrosomal reaction.
C. fast block to polyspermy.
D. fertilization.
E. spermiogenesis.
C
Anatomy & Physiology
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The arachnoid villi lack the tunica externa or adventitia found in blood vessels.
Answer the following statement true (T) or false (F)
Anatomy & Physiology
Which of the joints shown in the figure is classified as a monaxial joint?
a) A b) B c) C d) D e) B and C
Anatomy & Physiology
Rejection of the embryo/fetus
a. is blocked by Fas ligand binding to cytotoxic T cells causing apoptosis of these cells. b. is blocked by the destruction of tryptophan. c. is blocked by an increase in the number of regulatory T cells. d. all of these.
Anatomy & Physiology
The gelatinous material found in the posterior cavity is the
A) vitreous humor. B) aqueous humor. C) ora serrata. D) perilymph. E) tears.
Anatomy & Physiology