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Cranial Nerves - Anatomy & Physiology

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이 집합의 용어 (28)

  • How many pairs of cranial nerves are there and how are they numbered?
    There are 12 pairs of cranial nerves, numbered with Roman numerals from I to XII from anterior to posterior.
  • What is the primary function of the Olfactory nerve (I)?
    The Olfactory nerve (I) has a special visceral sensory function related to smell (olfaction).
  • Through which skull foramen does the Olfactory nerve pass?
    The Olfactory nerve passes through the cribriform plate of the ethmoid bone.
  • What is the main function of the Optic nerve (II)?
    The Optic nerve (II) has a special somatic sensory function for vision.
  • Which foramen does the Optic nerve pass through?
    The Optic nerve passes through the optic canal of the sphenoid bone.
  • List the somatic motor functions of the Oculomotor nerve (III).
    The Oculomotor nerve controls the superior, inferior, medial rectus muscles and the inferior oblique muscle of the eye.
  • What parasympathetic functions does the Oculomotor nerve (III) perform?
    It controls pupil constriction (sphincter pupillae) and lens accommodation (ciliary muscle).
  • Through which foramen does the Oculomotor nerve pass?
    The Oculomotor nerve passes through the superior orbital fissure.
  • What muscle does the Trochlear nerve (IV) innervate?
    The Trochlear nerve innervates the superior oblique muscle of the eye.
  • Which foramen does the Trochlear nerve pass through?
    The Trochlear nerve passes through the superior orbital fissure.
  • What are the sensory and motor functions of the Trigeminal nerve (V)?
    Sensory: General sensation from anterior scalp, mouth, teeth, anterior 2/3 of tongue, and jaw. Motor: mastication muscles.
  • Name the three branches of the Trigeminal nerve and their foramina.
    V1 Ophthalmic - superior orbital fissure, V2 Maxillary - foramen rotundum, V3 Mandibular - foramen ovale.
  • What muscle does the Abducens nerve (VI) control?
    The Abducens nerve controls the lateral rectus muscle of the eye.
  • Through which foramen does the Abducens nerve pass?
    The Abducens nerve passes through the superior orbital fissure.
  • What are the sensory and motor functions of the Facial nerve (VII)?
    Sensory: taste from anterior 2/3 of tongue. Motor: muscles of facial expression, parasympathetic to lacrimal, submandibular, and sublingual glands.
  • Which foramina does the Facial nerve pass through?
    The Facial nerve passes through the internal acoustic meatus and stylomastoid foramen.
  • What are the functions of the Vestibulocochlear nerve (VIII)?
    Special somatic sensory for equilibrium (vestibular branch) and hearing (cochlear branch).
  • Through which foramen does the Vestibulocochlear nerve pass?
    The Vestibulocochlear nerve passes through the internal acoustic meatus.
  • What are the sensory and motor functions of the Glossopharyngeal nerve (IX)?
    Sensory: posterior 1/3 of tongue taste and general sensation, carotid body and sinus. Motor: pharyngeal muscles, parasympathetic to parotid gland.
  • Which foramen does the Glossopharyngeal nerve pass through?
    The Glossopharyngeal nerve passes through the jugular foramen.
  • What are the functions of the Vagus nerve (X)?
    Sensory: heart, lungs, abdominal organs, taste from epiglottis. Motor: pharyngeal and laryngeal muscles, parasympathetic to smooth muscle of heart, lungs, and abdominal organs.
  • Through which foramen does the Vagus nerve pass?
    The Vagus nerve passes through the jugular foramen.
  • What muscles does the Accessory nerve (XI) innervate?
    The Accessory nerve controls the sternocleidomastoid and trapezius muscles.
  • Which foramina does the Accessory nerve pass through?
    The Accessory nerve passes through the foramen magnum and jugular foramen.
  • What is the function of the Hypoglossal nerve (XII)?
    The Hypoglossal nerve controls the intrinsic and extrinsic muscles of the tongue.
  • Through which foramen does the Hypoglossal nerve pass?
    The Hypoglossal nerve passes through the hypoglossal canal.
  • What mnemonic helps remember the cranial nerves in order?
    On (Olfactory), Occasion (Optic), Our (Oculomotor), Trusty (Trochlear), Truck (Trigeminal), Acts (Abducens), Funny (Facial), Very (Vestibulocochlear), Good (Glossopharyngeal), Vehicle (Vagus), Any (Accessory), How (Hypoglossal).
  • What mnemonic helps remember the function type of each cranial nerve?
    Some (Sensory), Say (Sensory), Marry (Motor), Money (Motor), But (Both), My (Motor), Brother (Both), Says (Sensory), Big (Both), Brain (Both), Matters (Motor), More (Motor).