Biology 223 Human Anatomy and Physiology Week 10; Lecture 1; Monday Dr. Stuart S. Sumida Soft...

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Biology 223 Human Anatomy and Physiology Week 10; Lecture 1; Monday Dr. Stuart S. Sumida Soft Tissues of the Head – Parts I & II

Transcript of Biology 223 Human Anatomy and Physiology Week 10; Lecture 1; Monday Dr. Stuart S. Sumida Soft...

Page 1: Biology 223 Human Anatomy and Physiology Week 10; Lecture 1; Monday Dr. Stuart S. Sumida Soft Tissues of the Head – Parts I & II.

Biology 223Human Anatomy and PhysiologyWeek 10; Lecture 1; MondayDr. Stuart S. Sumida

Soft Tissues of the Head – Parts I & II

Page 2: Biology 223 Human Anatomy and Physiology Week 10; Lecture 1; Monday Dr. Stuart S. Sumida Soft Tissues of the Head – Parts I & II.

Soft Tissues of the Head:

Brain and Cranial NervesMusclesArteriesVeinsGlands

Page 3: Biology 223 Human Anatomy and Physiology Week 10; Lecture 1; Monday Dr. Stuart S. Sumida Soft Tissues of the Head – Parts I & II.

FOREBRAIN

MIDBRAIN

HINDBRAIN

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Page 5: Biology 223 Human Anatomy and Physiology Week 10; Lecture 1; Monday Dr. Stuart S. Sumida Soft Tissues of the Head – Parts I & II.

Forebrain:Cerebrum – Perception, movement of somatopleure, sensoro-motor integration, emotion, memory, learning.Diencephalon – Homeostasis, behavioral drives inhypothalamus; sensory relay and modification in thalamus;melatonin secretion in pineal gland.

Midbrain (Mesencephalon)Control of eye movement.

HindbrainCerebellum and Pons – control of movement,proprioreceptive input; relays visual and auditory reflexes inpons.Medulla Oblongata – Involuntry functions: blood pressure,sleep, breathing, vomiting.

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Meninges (All from Neural Crest)

Outermost: Dura materMiddle: Arachnoid materDeepest: Pia mater

Cerebrospinal fluid between Arachnoid and Pia mater

Page 7: Biology 223 Human Anatomy and Physiology Week 10; Lecture 1; Monday Dr. Stuart S. Sumida Soft Tissues of the Head – Parts I & II.

Meninges: Dura mater

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Dural ReflectionsFalx cerebri

Tentorium cerebelli

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Vasculature: Venus Sinuses

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Vasculature: Venus Sinuses

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Vasculature: Venus Sinuses

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VENOUS DRAINAGE OF THE SKULL:

SUPERIOR SAGITTAL SINUS to RIGHT/LEFT TRANSVERSE SINUS

INFERIOR SAGITTAL SINUS TO STRAIGHT SINUS

R/L TRANSVERSE SINUSES TO R/L SIGMOID SINUSES

R/L SIGMOID SINUSES TO SUPERIOR BULB OF R/L JUGULAR VEIN

ALSO TO JUGULAR: R/L MARGINAL SINUSES, R/L CAVERNOUS SINUSES, OCCIPITAL SINUS, R/L

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Vasculature: Arterial Supply

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Vasculature: Arterial Supply

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ARTERIES LEADING TO CIRCULOSUS ARTERIOSUS

CEREBRI

•Right Carotid Artery•Left Carotid Artery•Basilar Artery (formed from right and left Vertebral Arteries)

•Also, know branches off of it!

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Major Muscles of the Head and Face are Derivatives of the Mandibular Arch and Hyoid Arch

The motor nerve to the mandibular arch: MANDIBULAR NERVE, V3.

The motor nerve of the hyoid arch: FACIAL NERVE, VII.

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Major Muscles of the Mandibular Arch (innervated by V3):

•Temporalis•Masseter•Medial Head of Pterygoid•Lateral Head of Pterygoid•Mylohyoid•Anterior Belly of Digastric•Tensor Tympani

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Major Muscles of the Hyoid Arch (innervated by VII):

•Posterior Belly of Digastric•Facial Muscles (!!)•Stapedius•Stylohyoid

Page 19: Biology 223 Human Anatomy and Physiology Week 10; Lecture 1; Monday Dr. Stuart S. Sumida Soft Tissues of the Head – Parts I & II.

Jaw Moving Musculature:

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Jaw Opening Musculature: Diagastric MuscleAnterior belly – innervated by Mandibular (V3) nervePosterior belly – innervated by Facial (VII) nerve

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Note! Stylohyoid, styloglossus, tongue muscles in general.

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Superficial Facial Muscles (all innervated by VII)

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Some muscles of mastication (Innervated by V3)

Deeper Facial Muscles (All innervated by VII)

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Facial Muscles You Have to Remember:

•Obicularis Oris•Obicularis Occuli•Frontalis•Buccinator•Platysma•Zyogmaticus Major•Depressor Anguli Oris

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Tongue: Surface

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Extrenisc and Intrensic Tongue Muscles

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Three Glands

Parotid

Sublingual Submandibular