Nokea
A sprain occurs when there is a tear in which structure?
- A. Dermis.
- B. Ligament.
- C. Cartilage.
- D. Muscle
Correct Answer: B
Rationale:
You may also like to solve these questions
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:
What contributes to phagocytosis in white blood cells?
- A. Golgi apparatus.
- B. Endoplasmic reticulum.
- C. Vacuoles.
- D. Lysosomes.
Correct Answer: D
Rationale:
Where do spermatozoa develop in men?
- A. Seminiferous tubules
- B. Vas deferens
- C. Ejaculatory ducts
- D. Bulbourethral glands
Correct Answer: A
Rationale: Spermatozoa develop within the seminiferous tubules of each testis. These tubules are responsible for the production of sperm through a process called spermatogenesis. While the vas deferens, ejaculatory ducts, and bulbourethral glands play essential roles in the transport and release of sperm, they are not involved in the actual development of sperm.
A tissue examined under the microscope exhibits the following characteristics: cells found on the internal surface of the stomach, no extracellular matrix, tall and thin cells, and no blood vessels in the tissue. What type of tissue is this?
- A. Epithelial
- B. Connective
- C. Muscle
- D. Cartilage
Correct Answer: A
Rationale: The correct answer is A: Epithelial. Epithelial tissue is characterized by cells tightly packed together that form a protective barrier on internal and external body surfaces. The description in the question matches the characteristics of epithelial tissue found lining the internal surface of organs like the stomach. This type of tissue lacks blood vessels and typically does not contain an extracellular matrix, which is a defining feature of connective tissue. Muscle tissue is composed of cells capable of contraction and relaxation, while cartilage is a type of connective tissue consisting of specialized cells embedded in a matrix.
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.