Activity and exercise
A) keep joints functional longer.
B) make joints more vulnerable to injury.
C) hasten osteoarthritis.
D) increase joint stiffness.
A
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The cells that are formed during spermatogenesis by meiosis I are called
A) spermatogonia. B) primary spermatocytes. C) secondary spermatocytes. D) spermatids. E) sperm.
The muscle that encircles the lips and enables them to pucker, as in a kiss, is the orbicularis ________.
Fill in the blank(s) with the appropriate word(s).
An emergent hernia repair is scheduled. As the attending physician is driving to the hospital, the medical student assisting on the case quickly reviews his anatomy atlas and is trying to commit to memory that the internal oblique abdominis muscle contributes to the formation of which of the follow- ing structures?
(A) Inguinal ligament (B) Deep inguinal ring (C) Falx inguinalis (conjoint tendon) (D) Internal spermatic fascia (E) Reflected inguinal ligament
What type of membrane proteins allow cells to identify one another?
A. enzymes B. carrier proteins C. channel protein D. receptor proteins E. marker molecules