Trivia Quiz On Brainstem Reflexes

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1/10 Questions

What does the eye reflex stabilize on the retina?
- Images
- Numbers
- Letters
- Ions

About This Quiz

Contained at the posterior part of the brain and continuous with the spinal cord, the brainstem is an important aspect of the human body as it assists the motor and sensory functions of the body. Brainstem reflexes are such inadvertent actions controlled by the brainstem. Take our trivia quiz to discover what you know on brainstem reflexes.

Trivia Quiz On Brainstem Reflexes - Quiz

2.

Which of these is a ear reflex?
- Oculo-cephalic Reflex
- Medication reflexes
- Matrix reflex
- Vestibulo-ocular reflex
Correct Answer

A. Vestibulo-ocular reflex

Explanation

The vestibulo-ocular reflex is a reflex that helps maintain stable vision by coordinating eye movements with head movements. This reflex allows the eyes to move in the opposite direction of head movement, which helps to keep the visual field stable. This reflex is essential for tasks such as reading while walking or maintaining balance while moving the head.

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3.

Which of these reflexes is controlled by the brainstem?
- Oculo-cephalic Reflex
- Medication reflexes
- Matrix reflex
- Chloride reflexes
Correct Answer

A. Oculo-cephalic Reflex

Explanation

The oculo-cephalic reflex, also known as the doll's eye reflex, is controlled by the brainstem. This reflex involves the movement of the eyes in response to the movement of the head. When the head is turned to one side, the eyes will move in the opposite direction to maintain fixation on a target. This reflex is mediated by the brainstem, specifically the vestibular nuclei and the oculomotor nuclei, which receive and process information from the inner ear and send signals to the muscles that control eye movement.

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4.

What is the reflex of eye movement known as?
- Oculo-cephalic Reflex
- Medication reflexes
- Matrix reflex
- Chloride reflexes
Correct Answer

A. Oculo-cephalic Reflex

Explanation

The reflex of eye movement is known as the oculo-cephalic reflex.

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5.

What direction does the brainstem reflex usually lead the eye movement to the head movement?
- Opposite
- Positive
- Negative
- Whole
Correct Answer

A. Opposite

Explanation

The brainstem reflex usually leads the eye movement in the opposite direction of the head movement. This reflex is known as the vestibulo-ocular reflex (VOR) and it helps to stabilize vision during head movements. When the head turns to one side, the brainstem sends signals to the eye muscles to move the eyes in the opposite direction, ensuring that the image on the retina remains stable. This allows us to maintain clear vision while moving our head.

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6.

What sign does a negative “doll’s eyes” of a comatose patient’s show?
- Intact Brainstem
- Not Intact Brainstem
- Positive Brainstem
- Negative Brainstem
Correct Answer

A. Not Intact Brainstem

Explanation

A negative "doll's eyes" sign in a comatose patient indicates that the brainstem is not intact. The doll's eyes reflex is a test that involves moving the patient's head from side to side. In a normal response, the eyes will move in the opposite direction of the head movement. However, in a patient with a non-intact brainstem, the eyes will remain fixed in one position and not move in the opposite direction. This indicates dysfunction or damage to the brainstem, which is responsible for controlling eye movements.

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7.

What corrects the eyes movement among these?
- Nystagmus
- Chlorophyll
- Chloroform
- Ricin
Correct Answer

A. Nystagmus

Explanation

Nystagmus is a condition that causes involuntary and repetitive eye movements. It can result in rapid, jerking movements of the eyes, making it difficult to maintain a steady gaze. The other options listed - chlorophyll, chloroform, and ricin - are unrelated to the movement of the eyes and do not correct or affect nystagmus in any way.

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8.

What direction of eye movement does pouring of warm water into the left ear lead to?
- Left
- Right
- Positive
- Negative
Correct Answer

A. Left

Explanation

Pouring warm water into the left ear leads to leftward eye movement. This is because the vestibular system, which is responsible for maintaining balance and spatial orientation, is stimulated by the warm water. The stimulation of the left ear causes the vestibular system to send signals to the brain, which in turn triggers eye movement towards the left side.

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9.

What is a caloric reflex?
- Oculo-cephalic Reflex
- Medication reflexes
- Matrix reflex
- Vestibulo-ocular reflex
Correct Answer

A. Vestibulo-ocular reflex

Explanation

The vestibulo-ocular reflex is a reflex that helps maintain stable vision during head movements. It works by coordinating eye movements with head movements, allowing the eyes to remain focused on a target even when the head is in motion. This reflex is important for maintaining clear vision and preventing blurriness or double vision when the head is moving.

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10.

Which of these is a way to test the reflex?
- Rapid head imposed test
- Halmagyi-Curthoys-test
- Oculo-verte test
- Grisham Law
Correct Answer

A. Halmagyi-Curthoys-test

Explanation

The Halmagyi-Curthoys test is a way to test the reflex. This test is used to assess the function of the vestibular system, which is responsible for balance and spatial orientation. It involves the rapid movement of the head to stimulate the vestibular system and elicit reflexive eye movements called nystagmus. By observing the direction and intensity of the nystagmus, healthcare professionals can evaluate the integrity of the vestibular system and diagnose any vestibular disorders.

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