Nokea
Which stratum of the epidermis is found only in thick skin?
- A. Lucidum.
- B. Corneum.
- C. Basale.
- D. Granulosum.
Correct Answer: A
Rationale:
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In what area of the body would you expect to find an especially thick stratum corneum?
- A. Back of the hand
- B. Heel of the foot
- C. Abdomen
- D. Over the shin
Correct Answer: B
Rationale: The stratum corneum, the outermost layer of the epidermis, is composed of dead skin cells. Areas that are subjected to constant pressure or friction, such as the heel of the foot, tend to have a thicker stratum corneum as a protective mechanism against wear and tear. Therefore, an especially thick stratum corneum would be expected on the heel of the foot, making it the correct answer.
Which structure controls the hormones secreted by the pituitary gland?
- A. hypothalamus
- B. adrenal gland
- C. testes
- D. pancreas
Correct Answer: A
Rationale: The correct answer is the hypothalamus. The hypothalamus is a region of the brain located below the thalamus that plays a crucial role in controlling the pituitary gland. It releases hormones that either stimulate or inhibit hormone production in the pituitary gland, thus regulating various bodily functions. The adrenal gland, testes, and pancreas do not directly control the hormones secreted by the pituitary gland.
Which process is increased when the sympathetic nervous system is stimulated?
- A. Uterine activity
- B. Gastrointestinal activity.
- C. Cardiac Output
- D. pancreatic activity.
Correct Answer: C
Rationale:
Which organelle contributes to phagocytosis in white blood cells?
- A. Endoplasmic Reticulum (ER)
- B. Lysosomes
- C. Vacuole
- D. Golgi apparatus
Correct Answer: B
Rationale: Lysosomes are the organelles responsible for phagocytosis in white blood cells. During phagocytosis, white blood cells engulf and digest pathogens or debris. Lysosomes contain enzymes that aid in breaking down the engulfed material, playing a crucial role in the process. On the other hand, the Endoplasmic Reticulum (ER), Vacuole, and Golgi apparatus have different functions within the cell and are not directly involved in phagocytosis.
What is the function of thrombocytes?
- A. Blood clotting
- B. Oxygen transport
- C. Immune response
- D. Hormone production
Correct Answer: A
Rationale: Thrombocytes, also known as platelets, play a crucial role in blood clotting. When there is an injury or damage to a blood vessel, thrombocytes adhere to the site and form a plug to stop bleeding. This process is essential for wound healing and preventing excessive blood loss. Therefore, the correct function of thrombocytes is blood clotting.