Nerves of the Head, Face, and Neck , also known as … of the Head, Face, and Neck The largest of...

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Supraorbital Supratrochlear OPHTHALMIC AREA MANDIBULAR AREA MAXILLARY AREA Zygomatic Infratrochlear Infraorbital Nasal Temporal Seventh Cranial Buccal Mental Mandibular Cervical Cervical cutaneous Greater auricular Auriculotemporal Posterior auricular Greater occipital Smaller occipital 128 Chapter 6 General Anatomy and Physiology Part 2: General Sciences neuron to a muscle, causing a reaction (for example, the quick removal of your hand from a hot object). Reflexes do not have to be learned; they are automatic. Nerves of the Head, Face, and Neck The largest of the cranial nerves is the fifth cranial nerve, also known as trifacial nerve (try-FAY-shul NURV) or trigeminal nerve (try-JEM-un-ul NURV). It is the chief sensory nerve of the face and serves as the motor nerve of the muscles that control chewing. It consists of three branches: • Ophthalmic nerve (ahf-THAL-mik NURV). Supplies impulses to the skin of the forehead, upper eyelids, and interior portion of the scalp, orbit, eyeball, and nasal passage. • Mandibular nerve (man-DIB-yuh- lur NURV). Affects the muscles of the chin, lower lip, and external ear. • Maxillary nerve (MAK-suh-lair- ee NURV). Supplies impulses to the upper part of the face (Figure 6–22). The following are the branches of the fifth cranial nerve that are affected by massage: • Auriculotemporal nerve (aw-RIK-yuh-loh-TEM-puh-rul NURV). Affects the external ear and skin above the temple, up to the top of the skull. • Infraorbital nerve (in-fruh-OR-bih-tul NURV). Affects the skin of the lower eyelid, side of the nose, upper lip, and mouth. • Infratrochlear nerve (in-frah-TRAHK-lee-ur NURV). Affects the membrane and skin of the nose. • Mental nerve (MEN-tul NURV). Affects the skin of the lower lip and chin. • Nasal nerve (NAY-zul NURV). Affects the point and lower side of the nose. • Supraorbital nerve (soo-pruh-OR-bih-tul NURV). Affects the skin of the forehead, scalp, eyebrow, and upper eyelid. ACT ivity There are sensory nerve endings all over the body. Try gently pinching a small piece of the skin on your arm. You feel a slight pressure, right? That is the sensory nerve endings sending a message from your arm to your brain that something is happening to the arm. Figure 6–22 Nerves of the head, face, and neck. © Milady, a part of Cengage Learning. 6 59306_C06.indd 128 5/3/11 2:25 PM

Transcript of Nerves of the Head, Face, and Neck , also known as … of the Head, Face, and Neck The largest of...

Page 1: Nerves of the Head, Face, and Neck , also known as … of the Head, Face, and Neck The largest of the cranial nerves is the fifth cranial nerve, also known as trifacial nerve (try-FAY-shul

Supraorbital

Supratrochlear

OPHTHALMIC AREA

MANDIBULAR AREA

MAXILLARY AREA

ZygomaticInfratrochlearInfraorbitalNasalTemporal

Seventh CranialBuccal

Mental

Mandibular

CervicalCervical cutaneousGreater auricular

Auriculotemporal

Posterior auricular

Greater occipital

Smaller occipital

128 Chapter 6 General Anatomy and Physiology Part 2: General Sciences

neuron to a muscle, causing a reaction (for example, the quick removal of your hand from a hot object). Reflexes do not have to be learned; they are automatic.

Nerves of the Head, Face, and NeckThe largest of the cranial nerves is the fifth cranial nerve, also known as trifacial nerve (try-FAY-shul NURV) or trigeminal nerve (try-JEM-un-ul NURV). It is the chief sensory nerve of the face and serves as the motor nerve of the muscles that control chewing. It consists of three branches:

• Ophthalmic nerve (ahf-THAL-mik NURV). Supplies impulses to the skin of the forehead, upper eyelids, and interior portion of the scalp, orbit, eyeball, and nasal passage.

• Mandibular nerve (man-DIB-yuh-lur NURV). Affects the muscles of the chin, lower lip, and external ear.

• Maxillary nerve (MAK-suh-lair-ee NURV). Supplies impulses to the upper part of the face (Figure 6–22).

The following are the branches of the fifth cranial nerve that are affected by massage:

• Auriculotemporal nerve (aw-RIK-yuh-loh-TEM-puh-rul NURV). Affects the external ear and skin above the temple, up to the top of the skull.

• Infraorbital nerve (in-fruh-OR-bih-tul NURV). Affects the skin of the lower eyelid, side of the nose, upper lip, and mouth.

• Infratrochlear nerve (in-frah-TRAHK-lee-ur NURV). Affects the membrane and skin of the nose.

• Mental nerve (MEN-tul NURV). Affects the skin of the lower lip and chin.

• Nasal nerve (NAY-zul NURV). Affects the point and lower side of the nose.

• Supraorbital nerve (soo-pruh-OR-bih-tul NURV). Affects the skin of the forehead, scalp, eyebrow, and upper eyelid.

ACTivityThere are sensory nerve endings all over the body. Try gently pinching a small piece of the skin on your arm. You feel a slight pressure, right? That is the sensory nerve endings sending a message from your arm to your brain that something is happening to the arm.

Figure 6–22Nerves of the head, face, and neck.

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