61. Which of the following events occurs in an erection? : 1380662

61. Which of the following events occurs in an erection? : 1380662.


61.  Which of the following events occurs in an erection?  
A.  vasoconstriction of arteries leading to erectile tissue of penis
B.  engorgement of erectile tissue of penis with blood
C.  dilation of venules leading from erectile tissue of penis
D.  relaxation of internal sphincter of urinary bladder
E.  decrease of blood flow to the penis

62.  Impotence occurs when  
A.  the erectile tissues of the penis fill with blood.
B.  semen accumulates in the urethra.
C.  an erection cannot be achieved or maintained.
D.  semen moves out of the urethra.
E.  sperm cell production decreases.

63.  Arrange the following events in the correct sequence:
(1) ejaculation
(2) emission
(3) erection  
A.  1, 2, 3
B.  3, 1, 2
C.  3, 2, 1
D.  1, 3, 2
E.  2, 3, 1

64.  Arrange the following events in correct sequence:
(1) inflation and rigidity of erectile tissue
(2) arteries supplying blood to erectile tissue dilate
(3) blood fills erectile tissue sinusoids and compresses veins  
A.  1, 2, 3
B.  2, 3, 1
C.  3, 2, 1
D.  2, 1, 3
E.  1, 3, 2

65.  Which of the following events in the male sex act occurs last and results in ejaculation?  
A.  peristaltic contractions of the ductus deferens
B.  contractions of skeletal muscle at the base of the penis
C.  constriction of the internal sphincter of the urinary bladder
D.  release of secretions from the seminal vesicles and the prostate gland
E.  semen accumulates in the prostatic urethra

66.  What is the role of NO (nitric oxide) in the male sex act?  
A.  dilation of blood vessels in the penis
B.  activation of a G protein
C.  secretion of mucous
D.  contraction of somatic muscles of the urogenital diaphragm

67.  The ovaries and uterus are held in position within the pelvis by bands of tissue called  
A.  follicles.
B.  muscles.
C.  endometrium.
D.  ligaments.
E.  tendons.

68.  The ovary is attached to the superior margin of the uterus by the  
A.  mesovarium.
B.  broad ligament.
C.  ovarian ligament.
D.  suspensory ligament.
E.  round ligament.

69.  The ovary is surrounded by a capsule of fibrous connective tissue called the  
A.  mesovarium.
B.  tunica albuginea.
C.  peritoneum.
D.  medulla.
E.  tunica alba.

70.  Of the two million primary oocytes in the ovaries at birth, only about _____ are ovulated.  
A.  40
B.  400
C.  2,000
D.  4,000
E.  400,000



61. Which of the following events occurs in an erection? : 1380662

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