Nokea
What is the cause of the burning sensation associated with anaerobic respiration?
- A. Carbon dioxide
- B. Lactic acid
- C. Oxygen
- D. Glucose
Correct Answer: B
Rationale: The burning sensation associated with anaerobic respiration is caused by the buildup of lactic acid in muscles. When oxygen supply to tissues is insufficient, the body produces lactic acid. During intense exercise when the oxygen demand exceeds supply, lactic acid accumulates, leading to the burning sensation. Therefore, lactic acid is responsible for the burning sensation experienced in anaerobic respiration.
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What are groups of similar cells called?
- A. Membrane
- B. System
- C. Organ
- D. Tissue
Correct Answer: D
Rationale: Groups of cells with similar structures and functions are called tissues. Tissues work together to perform specific functions in the body, such as muscle contraction, nerve signal transmission, and forming protective barriers. Examples of tissues include muscle tissue, nerve tissue, and epithelial tissue.
Which organ is part of the male reproductive system and urinary system?
- A. Epidermis
- B. Ureter
- C. Testis
- D. Urethra
Correct Answer: D
Rationale: The correct answer is D: Urethra. The urethra is a part of both the male reproductive system, as it serves as the duct for semen during ejaculation, and the urinary system, as it allows the passage of urine from the bladder to outside the body. The epidermis is the outermost layer of the skin, the ureter is a tube that carries urine from the kidneys to the bladder, and the testis is a male reproductive organ responsible for producing sperm.
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:
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.
The orthopedic surgeon informs you that you have broken the middle region of the humerus. What is he describing?
- A. Epiphysis
- B. Articular cartilage
- C. Perichondrium
- D. Diaphysis
Correct Answer: D
Rationale: The correct answer is D, Diaphysis. The humerus is a long bone consisting of a shaft known as the diaphysis. The diaphysis is the middle region of a long bone, while the epiphysis refers to the ends of the long bone. Articular cartilage is the smooth, white tissue that covers the ends of bones where they come together to form joints, and the perichondrium is the connective tissue covering the cartilage.