Podcast
Questions and Answers
Which cranial nerve is primarily responsible for sensory impulses for smell?
Which cranial nerve is primarily responsible for sensory impulses for smell?
- Optic (II)
- Facial (VII)
- Olfactory (I) (correct)
- Abducens (VI)
The Optic nerve is responsible for motor control of the superior oblique muscle.
The Optic nerve is responsible for motor control of the superior oblique muscle.
False (B)
What is the distribution type for the Glossopharyngeal nerve?
What is the distribution type for the Glossopharyngeal nerve?
Mixed
The ________ nerve is responsible for hearing and equilibrium.
The ________ nerve is responsible for hearing and equilibrium.
Match the following cranial nerves with their primary function:
Match the following cranial nerves with their primary function:
Which cranial nerve is responsible for mixed sensory and motor functions including the parotid gland?
Which cranial nerve is responsible for mixed sensory and motor functions including the parotid gland?
The Hypoglossal nerve primarily governs the muscles of the pharynx.
The Hypoglossal nerve primarily governs the muscles of the pharynx.
How many cranial nerves are listed in the provided information?
How many cranial nerves are listed in the provided information?
Flashcards
What is the function of the olfactory nerve?
What is the function of the olfactory nerve?
Sensory nerve responsible for smell. It transmits impulses from the olfactory epithelium to the brain.
What does the optic nerve do?
What does the optic nerve do?
A sensory nerve responsible for vision. It transmits impulses from the retina to the brain.
Which nerve controls eye movement and eyelid lifting?
Which nerve controls eye movement and eyelid lifting?
A motor nerve that controls the movement of four extraocular muscles: inferior rectus, medial rectus, superior rectus, and inferior oblique. It also controls the levator palpebrae superioris muscle, which raises your eyelid.
What nerve controls the superior oblique eye muscle?
What nerve controls the superior oblique eye muscle?
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What nerve is both a motor and a sensory nerve for the face and jaw?
What nerve is both a motor and a sensory nerve for the face and jaw?
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Which nerve controls the lateral rectus muscle?
Which nerve controls the lateral rectus muscle?
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Which nerve controls facial expressions and taste?
Which nerve controls facial expressions and taste?
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What nerve is involved in hearing and balance?
What nerve is involved in hearing and balance?
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Study Notes
Cranial Nerves
- Olfactory (I): Sensory - Smell from olfactory epithelium
- Optic (II): Sensory - Vision from retina
- Oculomotor (III): Motor - Eye movement (superior, medial, inferior rectus, inferior oblique, levator palpebrae superioris muscles), intrinsic eye muscles (iris and ciliary body)
- Trochlear (IV): Motor - Superior oblique muscle
- Trigeminal (V): Mixed - Motor to muscles of mastication; sensory from orbital and facial features, mouth (lips, gums, teeth, palate, tongue, pharynx)
- Abducens (VI): Motor - Lateral rectus muscle
- Facial (VII): Mixed - Motor to facial expression, lacrimal gland, submandibular and sublingual salivary glands; sensory from anterior 2/3 of tongue
- Vestibulocochlear (VIII): Sensory - Hearing and equilibrium from cochlea and vestibule
- Glossopharyngeal (IX): Mixed - Motor to pharyngeal muscles, parotid gland; sensory from posterior third of tongue, pharynx, palate; sensory receptors for blood pressure, pH, oxygen and carbon dioxide
- Vagus (X): Mixed - Motor to pharyngeal and palatal muscles, visceral motor to thoracic and abdominopelvic structures; sensory from pharynx, auricle, external acoustic meatus, diaphragm, and visceral organs
- Accessory (XI): Motor - Skeletal muscles of the palate, pharynx, larynx; innervates sternocleidomastoid and trapezius muscles
- Hypoglossal (XII): Motor - Somatic motor control of the tongue
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