Term
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Definition
| where do the 6 extrinsic eye muscles attach to? |
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Term
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Definition
| comes inferior and comes in straight; when it contracts it depresses eyeball |
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Term
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Definition
| what nerve innervates the inferior rectus muscle? |
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Term
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Definition
| comes in medially; adducts eyeball |
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Term
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Definition
| what nerve innervates the medial rectus muscle? |
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Term
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Definition
| superior and straight; when it contracts it elevates the eye |
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Term
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Definition
| what nerve innervates the superior rectus muscle? |
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Term
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Definition
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Term
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Definition
| what nerve innervates the lateral rectus muscle? |
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Term
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Definition
| helps to rotate the eyeball (upward and lateral) |
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Term
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Definition
| what nerve innervates the inferior oblique muscle? |
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Term
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Definition
| helps rotate eye (downward and laterally--down and out muscle); goes through loop of connective tissue so it can reverse its angle called the trochlea |
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Term
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Definition
| what nerve innervates the superior oblique muscle? |
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Term
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Definition
| the extrinsic or intrinsic muscles are involved with moving the tongue in various directions? |
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Term
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Definition
| the extrinsic or intrinsic muscles are involved with altering the shape of the tongue? |
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Term
| hypoglossal nerve (CNXII) |
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Definition
| what nerve innervates all the muscles of the tongue? |
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Term
1. stloglossus m.
2. hypoglossus m.
3. genioglossus m. |
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Definition
| what are the 3 extrinsic muscles of the tongue? |
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Term
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Definition
| orginates on the styloid process of the temporal bone; elevates the tongue and draws it posteriorly (retraction) |
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Term
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Definition
| originates on the hyoid bone; depresses the tongue |
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Term
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Definition
| originates on the mandible; protracts tongue--stick tongue out |
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Term
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Definition
| what nerves innervate the facial nerves?; originate on the surface of the skull and insert into the superficial fascia and dermis of skin; when they contractm they move the skin |
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Term
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Definition
| also known as the frontal belly of the occipitofrontalis m.; draws scalp anteriorly, raises eyebrows, and wrinkles forehead |
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Term
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Definition
| connects frontalis and occipitofrontalis muscle |
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Term
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Definition
| also known as the occipital belly of the occipitofrontalis m. draws scalp posteriorly |
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Term
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Definition
| encircles eye; closes the eye |
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Term
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Definition
| presses cheeks against teeth and lips, as in whistling, blowing, and sucking; also keeps food from getting between teeth and cheeks when chewing |
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Term
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Definition
| encircles the mouth; closes and protrudes lips (pouting lips) |
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Term
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Definition
| draws out part of lower lip inferiorly and posteriorly as in pouting; tenses skin of neck; very thin-lying over neck and goes down to shoulder and thorax--very superficial; extends all the way up to the corners of the mouth |
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Term
| mandibular division of the trigeminal nerve (CNV) |
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Definition
| what nerve innervates the muscles of mastication? |
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Term
1. temporalis m.
2. masseter m.
3. lateral pterygoid m.
4. medial pterygoid m. |
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Definition
| what are the four pairs of mastication muscles? |
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Term
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Definition
| runs from the temporal fossa to the coronoid process of mandible; elevates (closes) and retracts the mandible |
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Term
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Definition
| runs from zygomatic arch to the lateral surface of the angle of the mandible; elevates (closes the mandible) |
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Term
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Definition
| runs from the lateral side of the lateral pterygoid plate to the condyle of the mandible; DEPRESSES (OPENS) THE MANDIBLE (gravity helps open the mouth so that's why we dont need as many muscles to open mouth), protracts (protrudes) the mandible, and moves it from side to side to help with grinding |
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Term
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Definition
| runs from the medial side of the lateral pterygoid plate to the medial surface of the angle of the mandible; elevates (closes) the mandible, protracts (protrudes) the mandible, and moves it from side to side to help with grinding |
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Term
| sternocleidomastoid m and trapezius m. |
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Definition
| what are the 2 muscles of the neck that are innervated by the accessory nerve (CNXI)? |
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Term
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Definition
| forms the contour of the posterior neck; many of the actions involve the movement of the scapula, but the trapezius can also help extend the head |
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Term
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Definition
| originates on the sternum and the medial portion of the clavicle and inserts onto the mastoid process of the temporal bone; bilaterally, it rotates head to the side opposite the contracting muscle (platysma muscle is superficial to this muscle) |
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Term
| trapezius and sternocleidomastoid |
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Definition
| what two muscles make up the posterior triangle of the neck? |
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Term
| internal carotid and external carotid a |
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Definition
| each common carotid a. bifurcates into what two arteries? |
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Term
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Definition
| has no branches in the neck and supplies structures internal to the skull (brain) and orbit (eye) |
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Term
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Definition
| supplies the neck and structures of the head external to the skull |
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Term
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Definition
| baroreceptor (a type of mechanoreceptor); detects blood pressure-sends signal to brain (medulla because we have autonomic reflex center-housing visceral nuclei) through CNIX; information used to regulate heart rate |
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Term
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Definition
| chemoreceptor; detects concentration of oxygen in the blood-information sent to medulla because it houses respiratory centers; information used to regulate respiration rate |
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Term
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Definition
| returns blood from inside the skull (brain) |
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Term
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Definition
| returns blood from areas of the head external to the skull, as well as the neck and face |
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