A & P II Final Exam From Test #5
- 1.
The ability of sperm cells to move along the ductus deferens is due to ____________.
- A.
Gravity
- B.
Peristaltic contractions
- C.
Enzymatic activity
- D.
Hormonal action
Correct Answer
B. Peristaltic contractionsExplanation
The ability of sperm cells to move along the ductus deferens is due to peristaltic contractions. Peristaltic contractions are rhythmic, wave-like muscle contractions that propel substances through tubes or ducts in the body. In the case of the ductus deferens, these contractions help to propel sperm cells from the testes towards the urethra, allowing them to eventually be ejaculated during sexual intercourse. Gravity, enzymatic activity, and hormonal action do not play a direct role in the movement of sperm cells along the ductus deferens.Rate this question:
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- 2.
The ability of a male to ejaculate is due to the action of ______________.
- A.
Detumescence
- B.
The dartos muscle
- C.
Luteinizing hormone
- D.
The bulbospongiosus muscles
Correct Answer
D. The bulbospongiosus musclesExplanation
The bulbospongiosus muscles are responsible for the ability of a male to ejaculate. These muscles are located in the pelvic floor and surround the bulb of the penis. During ejaculation, these muscles contract rhythmically, helping to propel semen out of the penis.Rate this question:
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- 3.
The most important risk for testicular cancer in young males is _____________.
- A.
Smoking
- B.
A diet high in fat
- C.
Nondescent of the testes
- D.
Sexually transmitted disease
Correct Answer
C. Nondescent of the testesExplanation
pg 1028Rate this question:
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- 4.
The primary function of the uterus is to _____________.
- A.
Protect the ovaries
- B.
Synthesize female hormones
- C.
Regulate the ovarian and menstrual cycles
- D.
Receive, retain, and nourish a fertilized ovum
Correct Answer
D. Receive, retain, and nourish a fertilized ovumExplanation
pg 1042-1043Rate this question:
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- 5.
The corpus luteum is ____________.
- A.
The ruptured follicle following the ejection of an oocyte from the ovary
- B.
The ovarian ligament that anchors the ovary medially to the uterus
- C.
The mesovarium
- D.
Part of the uterine tube
Correct Answer
A. The ruptured follicle following the ejection of an oocyte from the ovaryExplanation
pg 1042Rate this question:
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- 6.
The structures that receive the ovulated oocyte, providing a site for fertilization are called __________.
- A.
The graafian follicles
- B.
The fallopian tubes
- C.
The infundibula
- D.
The fimbriae
Correct Answer
B. The fallopian tubesExplanation
pg 1042Rate this question:
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- 7.
The ectodermal cells migrate to form a raised groove known as _______________.
- A.
Blastocyst
- B.
Amnion formation
- C.
Germ cell formation
- D.
Primitive streak
Correct Answer
D. Primitive streakExplanation
pg 1081Rate this question:
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- 8.
Milk ejection or let-down reflex is stimulated by which of the following hormones associated with pregnancy?
- A.
Inhibin
- B.
Oxytocin
- C.
Prolactin
- D.
Gonadotropin
Correct Answer
B. OxytocinExplanation
pg 1093-1095Rate this question:
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- 9.
Which of the following is not a germ layer?
- A.
Ectoderm
- B.
Mesoderm
- C.
Epiderm
- D.
Endoderm
Correct Answer
C. EpidermExplanation
pg 1081Rate this question:
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- 10.
Which of the following is highly unlikely method of producing a child?
- A.
Embryo transfer
- B.
Ectopic implantation
- C.
Artificial insemination
- D.
Gamete intrafallopian transfer
Correct Answer
B. Ectopic implantationExplanation
pg 1097Rate this question:
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- 11.
Which of the following would not be classified as a lymphatic structure?
- A.
Pancreas
- B.
Spleen
- C.
Tonsil
- D.
Peyer's patches of intestine
Correct Answer
A. PancreasExplanation
pg 758 figure 20-5Rate this question:
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- 12.
The thymus is most active during:
- A.
Fetal development
- B.
Childhood
- C.
Middle age
- D.
Old age
Correct Answer
B. ChildhoodExplanation
pg 759Rate this question:
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- 13.
Lymph leaves a lymph node via ___________.
- A.
Efferent lymphatic vessels
- B.
Afferent lymphatic vessels
- C.
The cortical sinus
- D.
The subscapular sinus
Correct Answer
A. Efferent lympHatic vesselsExplanation
pg 757Rate this question:
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- 14.
Functions of the spleen include all of those except ___________.
- A.
Removal of old or defective blood cells from the blood
- B.
Forming crypts that trap bacteria
- C.
Storage of blood platelets
- D.
Storage of iron
Correct Answer
B. Forming crypts that trap bacteriaExplanation
pg 758Rate this question:
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- 15.
What is a bubo?
- A.
A wall in a lymph node
- B.
A lobe of the spleen
- C.
An infected Peyer's patch
- D.
An infected lymph node
Correct Answer
D. An infected lympH nodeExplanation
pg 757Rate this question:
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