Nokea
What contributes to phagocytosis in white blood cells?
- A. Golgi apparatus.
- B. Endoplasmic reticulum.
- C. Vacuoles.
- D. Lysosomes.
Correct Answer: D
Rationale:
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A tissue examined under the microscope exhibits the following characteristics: cells found on the internal surface of the stomach, no extracellular matrix, tall and thin cells, and no blood vessels in the tissue. What type of tissue is this?
- A. Epithelial
- B. Connective
- C. Muscle
- D. Cartilage
Correct Answer: A
Rationale: The correct answer is A: Epithelial. Epithelial tissue is characterized by cells tightly packed together that form a protective barrier on internal and external body surfaces. The description in the question matches the characteristics of epithelial tissue found lining the internal surface of organs like the stomach. This type of tissue lacks blood vessels and typically does not contain an extracellular matrix, which is a defining feature of connective tissue. Muscle tissue is composed of cells capable of contraction and relaxation, while cartilage is a type of connective tissue consisting of specialized cells embedded in a matrix.
Which anatomical structure houses the terminal bronchioles?
- A. Heart
- B. Lung.
- C. Diaphysis.
- D. Femur.
Correct Answer: B
Rationale:
Which muscle of the quadriceps group is located on the lateral surface of the lower extremity?
- A. Vastus lateralis
- B. Gastrocnemius
- C. Anterior tibialis
- D. Rectus femoris
Correct Answer: A
Rationale: The correct answer is A: Vastus lateralis. The vastus lateralis is a muscle of the quadriceps group that is situated on the lateral side of the lower extremity. It is responsible for extending the knee joint. Gastrocnemius (choice B) is a muscle located in the calf, Anterior tibialis (choice C) is a muscle in the anterior compartment of the leg, and Rectus femoris (choice D) is a muscle of the quadriceps group but is not located on the lateral surface of the lower extremity. Therefore, they do not match the description provided in the question and are incorrect choices.
What is the primary function of the respiratory system?
- A. To digest food
- B. To control body movement
- C. To transport oxygen and carbon dioxide
- D. To circulate blood
Correct Answer: C
Rationale: The primary function of the respiratory system is to transport oxygen from the air into the body and remove carbon dioxide from the body. Oxygen is necessary for cells to produce energy through a process called cellular respiration, and carbon dioxide is a waste product that needs to be eliminated. Therefore, the correct answer is C, 'To transport oxygen and carbon dioxide.' Digesting food (choice A) is the primary function of the digestive system, controlling body movement (choice B) is the role of the muscular system, and circulating blood (choice D) is the function of the circulatory system.
An over-production of cerumen can accumulate in which area?
- A. In the nose.
- B. On the eyelids and eyes.
- C. In the external ear canals.
- D. On the teeth
Correct Answer: C
Rationale: