Nokea
Which glands of the skin produce a thin, watery secretion?
- A. Sebaceous glands
- B. Eccrine glands
- C. Apocrine glands
- D. Endocrine glands
Correct Answer: B
Rationale: Eccrine glands are the correct answer. These glands produce a thin, watery secretion known as sweat. The primary function of eccrine glands is to regulate body temperature by releasing sweat that evaporates and cools the body. Sebaceous glands secrete an oily substance, apocrine glands release a thicker secretion, and endocrine glands are responsible for hormone secretion.
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Which type of joint within the synovial category is the elbow classified as?
- 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 within the synovial category. Hinge joints primarily allow for flexion and extension movements, resembling a door hinge. In the case of the elbow joint, it enables the bending and straightening actions of the arm, crucial for various activities involving the upper limb.
You have been given a sample of tissue that has open spaces partially filled by an assemblage of needle-like structures. What is the tissue?
- A. Spongy bone
- B. Compact bone
- C. Cartilage
- D. Adipose tissue
Correct Answer: A
Rationale: The correct answer is A: Spongy bone. Spongy bone tissue has open spaces partially filled by needle-like structures known as trabeculae. This arrangement gives spongy bone its characteristic appearance and provides structural support while reducing the tissue's density. Compact bone, on the other hand, is dense and solid, lacking the open spaces seen in spongy bone. Cartilage is a flexible connective tissue without needle-like structures, and adipose tissue is predominantly composed of fat cells, not needle-like structures.
How many days is the average menstrual cycle?
- A. 1400%
- B. 4500%
- C. 3000%
- D. 2800%
Correct Answer: D
Rationale:
Anaerobic respiration can lead to a burning sensation caused by which molecule?
- A. Adenosine triphosphate (ATP).
- B. Lactic acid
- C. Creatine-phosphate.
- D. Adenosine diphosphate (ADP).
Correct Answer: B
Rationale:
Which anatomic structure houses the malleus, incus, and stapes?
- A. Nose
- B. Throat
- C. Eye
- D. Ear
Correct Answer: D
Rationale: The correct answer is D: Ear. The malleus, incus, and stapes, also known as the auditory ossicles, are the three smallest bones in the human body and are located in the middle ear. These bones play a crucial role in transmitting sound vibrations from the eardrum to the inner ear, facilitating the hearing process.