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In which of the following structures does fertilization of an ovum by a spermatozoa occur?

A.

Ovary

B.

Uterus

C.

Fallopian tube

D.

Cervix

Answer and Explanation

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.


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Related Questions

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.

Correct Answer is C

Explanation

a. Glycoproteins: Glycoproteins are proteins that have carbohydrate groups attached to them and are not related to glycogen breakdown.

b. Glycosaminoglycan: Glycosaminoglycans are long polysaccharide molecules involved in building connective tissues, not in glycogen catabolism.

c. Glycogenolysis: Correct. Glycogenolysis is the process of breaking down glycogen into glucose to be used for energy.

d. Gluconeogenesis: Gluconeogenesis is the process of producing glucose from non-carbohydrate sources, not the breakdown of glycogen.

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