Anatomy HESI A2

Anatomy HESI A2 Related

Review Anatomy HESI A2 related questions and content

How does the lymphatic system work with the circulatory system?

  • A. The circulatory system produces red blood cells for the lymphatic system.
  • B. Lymph draws excess fluid from the cells and deposits it into the blood vessels.
  • C. The heart regulates the production of lymph in the lymph glands.
  • D. White cells from the lymphatic system eliminate excess red blood cells.
Correct Answer: B

Rationale: The lymphatic system works with the circulatory system by draining excess fluid and waste products from the spaces between cells, known as interstitial fluid. This excess fluid, now called lymph, is then transported back into the blood circulation through lymphatic vessels. This process helps maintain fluid balance in the body and supports the circulatory system in regulating blood volume and pressure. Choice A is incorrect because the circulatory system does not produce red blood cells for the lymphatic system. Choice C is incorrect as the heart does not regulate lymph production in lymph glands. Choice D is incorrect as white cells from the lymphatic system do not eliminate excess red blood cells. Therefore, the correct answer is B, as lymph draws excess fluid from the cells and deposits it into the blood vessels, aiding in maintaining proper fluid balance and supporting the circulatory system.

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Where would you be likely to find a Schwann cell?

  • A. In the digestive system
  • B. In the nervous system
  • C. In the skeletal system
  • D. In the muscular system
Correct Answer: B

Rationale: Schwann cells are a type of neuroglia found in the peripheral nervous system. They are responsible for producing the myelin sheath around axons of neurons, which helps with the conduction of nerve impulses. Therefore, Schwann cells are typically found in the nervous system. Choices A, C, and D are incorrect because Schwann cells are specifically associated with the nervous system and are not found in the digestive, skeletal, or muscular systems.

Which feature of the ear is most medial?

  • A. Pinna
  • B. Tympanic membrane
  • C. Cochlea
  • D. Outer canal
Correct Answer: B

Rationale: The tympanic membrane, also known as the eardrum, is the most medial feature in the ear. It separates the outer ear from the middle ear and serves as a barrier that vibrates in response to sound waves, transmitting vibrations to the middle ear ossicles. The pinna, cochlea, and outer canal are located more laterally in the ear anatomy. The pinna is the visible part of the ear located on the lateral side of the head, the cochlea is a spiral-shaped structure in the inner ear responsible for hearing, and the outer canal refers to the external auditory canal leading to the eardrum.

What is the name of the bone in the human thigh?

  • A. Ulna
  • B. Femur
  • C. Radius
  • D. Humerus
Correct Answer: B

Rationale: The correct answer is B. Femur. The femur, also known as the thigh bone, is located in the human thigh. It is the longest and strongest bone in the human body, extending from the hip to the knee. The ulna, radius, and humerus, on the other hand, are bones found in the arm. Therefore, choices A, C, and D are incorrect as they are bones of the arm, not the thigh.

What is a common finding in a whiplash injury?

  • A. Cardiopulmonary issues
  • B. Side-to-side spinal curvature
  • C. Eventual herniation of discs
  • D. Traumatic injury to ligaments
Correct Answer: D

Rationale: A common finding in a whiplash injury is a traumatic injury to ligaments. Whiplash occurs due to sudden hyperextension and hyperflexion of the neck, leading to strain or tearing of ligaments in the neck. This can manifest as neck pain, stiffness, and limited range of motion. While other complications like cardiopulmonary problems, side-to-side spinal curvature, or eventual herniation of discs are not typically associated with whiplash injuries.

Which parts of the heart are separated by the mitral valve?

  • A. Left atrium and right atrium
  • B. Right atrium and right ventricle
  • C. Left ventricle and right ventricle
  • D. Left atrium and left ventricle
Correct Answer: D

Rationale: The mitral valve, also known as the bicuspid valve, separates the left atrium and the left ventricle of the heart. Its primary function is to prevent the backflow of blood from the left ventricle to the left atrium during the heart's contraction. Therefore, option D, 'Left atrium and left ventricle,' is the correct answer. Choices A, B, and C are incorrect because they do not represent the parts separated by the mitral valve.

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