In which of the following structures does fertilization of an ovum by a spermatozoa occur?
Ovary
Uterus
Fallopian tube
Cervix
The Correct Answer is C
a. Ovary: The ovary releases the ovum during ovulation, but fertilization does not occur here.
b. Uterus: The fertilized ovum implants and develops in the uterus, but fertilization occurs earlier.
c. Fallopian tube: Fertilization typically occurs in the ampulla of the fallopian tube, where the sperm meets the ovum.
d. Cervix: The cervix is the lower part of the uterus and is not involved in the fertilization process.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is B
Explanation
a. Cell body: The cell body is the main part of the neuron containing the nucleus and other organelles. It does not directly transmit impulses.
b. Axon: The axon is a long fiber that carries electrical impulses away from the cell body towards other neurons or muscles.
c. Synapse: A synapse is a junction between two neurons where nerve impulses are transmitted. The axon of one neuron transmits an electrical signal to the dendrite or cell body of another neuron across a small gap. Neurotransmitters are released from the presynaptic neuron and bind to receptors on the postsynaptic neuron, either exciting or inhibiting it.
d. Dendrite: Dendrites are short, branching fibers that receive signals from other neurons and transmit them towards the cell body.
Correct Answer is C
Explanation
a: Chest cavity compresses the lungs - This is incorrect; during inspiration, the chest cavity expands, not compresses.
b: Length of the thoracic cavity decreases - This is incorrect; during inspiration, the thoracic cavity increases in length as it expands.
c. Diameter of the thoracic cavity increases. When inspiratory muscles contract, such as the diaphragm and external intercostal muscles, the thoracic cavity expands, increasing its volume. This expansion decreases the pressure within the lungs, causing air to flow in (inspiration).
d: Diaphragm rises up in the abdomen - This is incorrect; during inspiration, the diaphragm contracts and moves downward, not upward.
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