Nokea
What do ceruminous glands secrete?
- A. Oily sebum.
- B. Earwax.
- C. Keratin
- D. Mucus.
Correct Answer: B
Rationale:
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Which of the following are functions of the skeletal system? (Select the ONE that does not apply.)
- A. Supporting the body
- B. Hemopoiesis
- C. Conducting impulses
- D. Providing protection
Correct Answer: C
Rationale: The correct answer is C, 'Conducting impulses.' The skeletal system's primary functions include supporting the body to maintain posture and provide structure, facilitating movement, protecting internal organs, and producing blood cells through hemopoiesis. Conducting impulses is a function of the nervous system, not the skeletal system.
Which muscle of the quadriceps group is located on the side 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 in the quadriceps group located on the lateral side of the thigh and lower extremity. This muscle is essential for knee extension and overall lower limb strength, particularly in activities like walking, running, and jumping.
What is the basic unit of life and the building block of tissues and organs?
- A. Atom
- B. Organelle
- C. Cell
- D. DNA
Correct Answer: C
Rationale: The correct answer is C: Cell. Cells are the basic unit of life and are the building blocks of tissues and organs. They are responsible for carrying out essential functions in living organisms, such as growth, maintenance, and reproduction. While atoms are the smallest unit of matter, organelles are structures within cells, and DNA carries genetic information within cells, the cell itself is the fundamental unit of life.
Which stratum of the epidermis is found only in thick skin?
- A. Lucidum.
- B. Corneum.
- C. Basale.
- D. Granulosum.
Correct Answer: A
Rationale:
How much air does an adult inhale in an average breath?
- A. 500 mL
- B. 750 mL
- C. 1000 mL
- D. 1250 mL
Correct Answer: A
Rationale: An adult typically inhales around 500 mL of air in an average breath. This volume is known as tidal volume, representing the amount of air inspired or expired during normal breathing. Tidal volume plays a crucial role in efficient gas exchange in the lungs and maintaining adequate oxygen levels in the body. It is essential for proper respiratory function and ensuring the body receives the necessary oxygen for cellular respiration and overall metabolism.