Anatomy and Physiology

Anatomy and Physiology Related

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What type of tissue is represented by a tissue examined under the microscope that exhibits the following characteristics: cells found on the internal surface of the stomach, no extracellular matrix, cells tall and thin, and no blood vessels in the tissue?

  • A. Epithelial
  • B. Connective
  • C. Muscle
  • D. Cartilage
Correct Answer: A

Rationale: The correct answer is A: Epithelial. Epithelial tissues are characterized by tightly packed cells that line surfaces both inside and outside the body, such as the internal surface of the stomach. They have no extracellular matrix, are often tall and thin (as seen in columnar epithelium), and do not contain blood vessels. These characteristics align with the description provided in the question, indicating an epithelial tissue.

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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 is the name of the structure that prevents food from entering the airway?

  • A. trachea
  • B. esophagus
  • C. diaphragm
  • D. epiglottis
Correct Answer: D

Rationale: The structure that prevents food from entering the airway is the epiglottis. The epiglottis is a flap of cartilage located behind the tongue at the top of the larynx. During swallowing, the epiglottis covers the opening of the trachea, directing food and liquids to the esophagus instead of entering the airway. This mechanism ensures that food safely passes into the digestive system, avoiding any blockage of the respiratory pathway.

Which type of cell division occurs in the gonads?

  • A. Mitosis
  • B. Meiosis
  • C. Binary fission
  • D. Asexual division
Correct Answer: B

Rationale: Meiosis is the type of cell division that occurs in the gonads. During meiosis, cells undergo two rounds of division resulting in the formation of gametes (sperm and egg cells) with half the number of chromosomes. This process is vital for sexual reproduction and genetic diversity.

Which organ is part of both the male reproductive system and the urinary system?

  • A. Ureter.
  • B. Testis.
  • C. Epididymis.
  • D. Urethra.
Correct Answer: D

Rationale:

Which type of muscle tissue is found in the heart?

  • A. Smooth Muscle
  • B. Skeletal Muscle
  • C. Cardiac Muscle
  • D. Elastic Muscle
Correct Answer: C

Rationale: The correct answer is C: Cardiac Muscle. Cardiac muscle tissue is specifically found in the heart and is responsible for its involuntary contractions to pump blood throughout the body. Cardiac muscle has unique features that enable synchronized contractions, essential for maintaining the heart's function, unlike skeletal and smooth muscles.

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