Anatomy and Physiology

Anatomy and Physiology Related

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What organelle contributes to phagocytosis in white blood cells?

  • A. ER
  • B. Lysosomes
  • C. Vacuole
  • D. Golgi apparatus
Correct Answer: B

Rationale: Lysosomes play a crucial role in phagocytosis within white blood cells. Lysosomes contain enzymes that aid in the digestion of foreign particles and cellular debris, making them essential for the process of phagocytosis. The other organelles listed, such as the endoplasmic reticulum (ER), vacuole, and Golgi apparatus, do not directly contribute to phagocytosis within white blood cells.

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Which organ is part of both the male reproductive system and the urinary system?

  • A. Ureter.
  • B. Testis.
  • C. Epididymis.
  • D. Urethra.
Correct Answer: D

Rationale:

A sprain occurs when there is a tear in which structure?

  • A. Dermis.
  • B. Ligament.
  • C. Cartilage.
  • D. Muscle
Correct Answer: B

Rationale:

How does the skin aid in maintaining the calcium and phosphate levels of the body?

  • A. Sebum production
  • B. Keratin synthesis
  • C. Vitamin A synthesis
  • D. Vitamin D production
Correct Answer: D

Rationale: The skin aids in maintaining calcium and phosphate levels in the body by producing Vitamin D when exposed to sunlight. Vitamin D is crucial for the absorption of calcium and phosphate from the diet, vital for bone health, and various physiological functions. When UV radiation penetrates the skin, it triggers the conversion of a compound into Vitamin D, which then facilitates the absorption of calcium and phosphate in the intestines.

Which type of cholesterol is considered to be the healthiest?

  • A. LDL
  • B. HDL
  • C. VLDL
  • D. VHDL
Correct Answer: B

Rationale: High-Density Lipoprotein (HDL) cholesterol is considered the healthiest type of cholesterol because it helps remove LDL cholesterol from the arteries, reducing the risk of heart disease. HDL acts as a scavenger, carrying cholesterol away from the arteries to the liver where it can be processed and eliminated from the body. Having high levels of HDL cholesterol is associated with a lower risk of cardiovascular diseases.

How many days is the average menstrual cycle?

  • A. 1400%
  • B. 4500%
  • C. 3000%
  • D. 2800%
Correct Answer: D

Rationale:

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