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Which of the cranial nerves below have some function in vision? Select all that apply. Abducens nerve Trochlear nerve Facial nerve Trigeminal nerve

Which of the cranial nerves below have some function in vision? Select all that apply. Abducens nerve Trochlear nerve Facial nerve Trigeminal nerve

Human Anatomy & Physiology (11th Edition)
Human Anatomy & Physiology (11th Edition)
11th Edition
ISBN:9780134580999
Author:Elaine N. Marieb, Katja N. Hoehn
Publisher:Elaine N. Marieb, Katja N. Hoehn
Chapter1: The Human Body: An Orientation
Section: Chapter Questions
Problem 1RQ: The correct sequence of levels forming the structural hierarchy is A. (a) organ, organ system,...
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### Understanding Cranial Nerves and Their Functions in Vision **Question:** Which of the cranial nerves below have some function in vision? **Instructions:** Select all that apply. **Options:** - [x] Abducens nerve - [x] Trochlear nerve - [ ] Facial nerve - [ ] Trigeminal nerve ### Explanation: The cranial nerves that are involved in functions related to vision are critical for movement and control of the eye muscles, contributing to various aspects of visual perception. Here is a brief overview of the cranial nerves listed and their relation to vision: - **Abducens Nerve (VI)**: This nerve controls the lateral rectus muscle, which is responsible for moving the eye outward, away from the nose. - **Trochlear Nerve (IV)**: This nerve innervates the superior oblique muscle, which helps move the eye downward and laterally. - **Facial Nerve (VII)**: Although primarily responsible for facial expressions, taste sensations, and some gland functions, it does not have a direct role in vision. - **Trigeminal Nerve (V)**: This nerve is mainly responsible for sensory data from the face and motor functions such as biting and chewing, and it does not directly contribute to eye muscle movement. To effectively understand the visual functionalities, it is crucial to focus on the Abducens and Trochlear nerves due to their essential roles in eye movement.
Transcribed Image Text:### Understanding Cranial Nerves and Their Functions in Vision **Question:** Which of the cranial nerves below have some function in vision? **Instructions:** Select all that apply. **Options:** - [x] Abducens nerve - [x] Trochlear nerve - [ ] Facial nerve - [ ] Trigeminal nerve ### Explanation: The cranial nerves that are involved in functions related to vision are critical for movement and control of the eye muscles, contributing to various aspects of visual perception. Here is a brief overview of the cranial nerves listed and their relation to vision: - **Abducens Nerve (VI)**: This nerve controls the lateral rectus muscle, which is responsible for moving the eye outward, away from the nose. - **Trochlear Nerve (IV)**: This nerve innervates the superior oblique muscle, which helps move the eye downward and laterally. - **Facial Nerve (VII)**: Although primarily responsible for facial expressions, taste sensations, and some gland functions, it does not have a direct role in vision. - **Trigeminal Nerve (V)**: This nerve is mainly responsible for sensory data from the face and motor functions such as biting and chewing, and it does not directly contribute to eye muscle movement. To effectively understand the visual functionalities, it is crucial to focus on the Abducens and Trochlear nerves due to their essential roles in eye movement.
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