HESI A2
Anatomy HESI A2
1. The cheekbones are positioned ___________ to the nose.
- A. anterior
- B. proximal
- C. deep
- D. lateral
Correct answer: D
Rationale: The term 'lateral' refers to the direction away from the midline of the body. In this case, the cheekbones are situated to the sides of the nose, making them lateral to the nose. Therefore, 'lateral' correctly describes the position of the cheekbones in relation to the nose. Choices A, B, and C are incorrect: A. 'Anterior' means situated at or towards the front, which is not the correct description of the cheekbones in relation to the nose. B. 'Proximal' means situated nearer to the center of the body, which is not the correct description of the cheekbones' position in relation to the nose. C. 'Deep' refers to being situated further away from the surface, which is not the appropriate term to describe the cheekbones' position in relation to the nose.
2. How might the headrest on a car prevent traumatic injury?
- A. By limiting hyperflexion of the neck
- B. By limiting hyperextension of the neck
- C. By reducing vertebral compression
- D. By preventing disc degeneration
Correct answer: B
Rationale: The headrest on a car is designed to prevent traumatic injury by limiting hyperextension of the neck during a rear-end collision. This helps reduce the risk of whiplash and other neck injuries that may occur when the head is forcefully thrown backward. Choice A is incorrect because hyperflexion is not the primary concern in rear-end collisions. Choice C is incorrect as the headrest does not directly reduce vertebral compression. Choice D is incorrect because the headrest is not directly involved in preventing disc degeneration.
3. To which system do the retinas belong?
- A. skeletal system
- B. nervous system
- C. lymphatic system
- D. circulatory system
Correct answer: B
Rationale: The retinas belong to the nervous system. The retina is a layer of tissue at the back of the eye responsible for detecting light and sending visual information to the brain through the optic nerve. This process is essential for vision, which is controlled by the nervous system. Choices A, C, and D are incorrect because the retinas have no association with the skeletal, lymphatic, or circulatory systems.
4. What is the function of the large intestine in the digestive system?
- A. To secrete digestive enzymes
- B. To absorb water and form solid waste
- C. To produce bile
- D. To transport nutrients
Correct answer: B
Rationale: The large intestine's primary function is to absorb water from the remaining indigestible food matter that enters it from the small intestine. This absorption process helps in forming solid waste (feces) by compacting the material and preparing it for excretion. The large intestine does not secrete digestive enzymes, produce bile, or transport nutrients. Therefore, option B, 'To absorb water and form solid waste,' is the correct function of the large intestine in the digestive system.
5. Which type of joint is found in the knee?
- A. Ball and socket joint
- B. Hinge joint
- C. Pivot joint
- D. Saddle joint
Correct answer: B
Rationale: The correct answer is a hinge joint. The knee is a hinge joint that allows for flexion and extension movements, enabling the leg to bend and straighten. This type of joint is designed for movement along one plane, similar to a door hinge. Choice A, ball and socket joint, is incorrect as this type of joint allows for a wider range of motion in multiple directions, unlike the knee joint. Choice C, pivot joint, and Choice D, saddle joint, are also incorrect as they do not accurately describe the type of joint found in the knee.
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