Nokea
A professional boxer gets punched in the nose resulting in a deviated septum. Which bone is most likely to be involved?
- A. Sella turcica.
- B. Vomer
- C. Calcaneous.
- D. Malleus.
Correct Answer: B
Rationale:
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Why are the hydrochloric acid and digestive enzymes from the stomach unable to digest the stomach itself?
- A. The digestive enzymes in the stomach are too weak.
- B. Rugae lining of the stomach Is too tough to be attacked by digestive enzymes.
- C. Stomach wall is protected by large amounts of mucus.
- D. Stomach wall is composed of substances other than protein.
Correct Answer: C
Rationale:
Which compound is associated with a burning sensation as a result of anaerobic respiration?
- A. Carbon dioxide
- B. Lactic acid
- C. Oxygen
- D. Glucose
Correct Answer: B
Rationale: During anaerobic respiration, the body produces lactic acid as a byproduct when oxygen is limited. The accumulation of lactic acid can lead to a burning sensation in muscles due to its build-up. Therefore, lactic acid is the correct choice as it is the compound associated with the burning sensation related to anaerobic respiration.
What type of synovial joint is the elbow?
- A. Pivot
- B. Hinge
- C. Ball and socket
- D. Toddle
Correct Answer: B
Rationale: The correct answer is B: Hinge. The elbow joint is classified as a hinge joint because of its structure and movement capabilities. Hinge joints allow movement in only one plane, similar to a door hinge, enabling flexion and extension movements. In contrast, pivot joints allow rotational movement, ball and socket joints offer a wide range of motion in multiple directions, and toddle is not a recognized joint type.
Which tissue serves as the framework of the body by providing support and structure for the organs?
- A. Epithelial
- B. Connective
- C. Nervous
- D. Muscle
Correct Answer: B
Rationale: Connective tissue serves as the framework of the body by providing support and structure for the organs. It is composed of cells and extracellular matrix, giving it strength and flexibility. Examples of connective tissue include bone, cartilage, and tendons, which play crucial roles in maintaining the body's shape and integrity.
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.