Nokea
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.
You may also like to solve these questions
What does the ceruminous gland secrete?
- A. Ear wax
- B. Keratin
- C. Mucus
- D. Oily sebum
Correct Answer: A
Rationale: The ceruminous gland, located in the ear canal, secretes ear wax, also known as cerumen. Ear wax plays a crucial role in protecting the ear canal by trapping dust and other particles, preventing them from reaching the delicate eardrum. Additionally, ear wax possesses antibacterial properties that aid in safeguarding the ear from potential infections. Therefore, the correct answer is A: Ear wax.
What percentage of a female's blood volume is composed of red blood cells?
- A. 10%
- B. 25%
- C. 40%
- D. 70%
Correct Answer: C
Rationale: Approximately 40% of a female's blood volume is composed of red blood cells, a proportion known as hematocrit. This percentage may vary slightly based on factors like age and overall health. Red blood cells play a crucial role in oxygen transport throughout the body, and deviations from the normal range can indicate various medical conditions.
When assessing a female patient who describes herself as a strict vegetarian, the nurse notes that she has a yellow tone to her skin. The nurse should ask the client if she has eaten large amounts of which foods?
- A. Carrots and squash.
- B. Turnips and beets.
- C. Rice and eggs.
- D. Spinach and mustard greens.
Correct Answer: A
Rationale:
How does the skin aid in maintaining the calcium and phosphate levels of the body?
- A. Sebum
- B. Keratin
- C. Vitamin A
- D. Vitamin D
Correct Answer: D
Rationale: The correct answer is Vitamin D. The skin plays a crucial role in maintaining calcium and phosphate levels by producing Vitamin D when exposed to sunlight. Vitamin D helps in the absorption of calcium and phosphate from the intestines, thus regulating their levels in the body. Sebum is an oily substance produced by the skin to moisturize and protect it. Keratin is a protein that forms the structure of the skin and its appendages. Vitamin A is essential for skin health and vision but is not directly involved in regulating calcium and phosphate levels.
What do ceruminous glands secrete?
- A. Oily sebum.
- B. Earwax.
- C. Keratin
- D. Mucus.
Correct Answer: B
Rationale: