PSY 2210 Lecture Notes - Lecture 13: Exophthalmos, Myxedema, Acromegaly

• School: Troy University
• Department: Psychology
• Course: PSY 2210
• Professor: Parks- Orendorff

Document Summary

Head, face, and neck, including regional lymphatics and eyes. Skull is rigid box that protects brain and is supported by cervical vertebra cranial bones. Facial expressions are formed by the facial muscles which are mediated by cranial nerve vii, the facial nerve. Think of the neck as conduit of many structures. Vessels, muscles, nerves, lymphatics, and viscera of respiratory and digestive system. Internal carotid branches off common carotid and runs inward and upward to supply brain. External carotid supplies face, salivary glands, and super cial temporal area. Major neck muscles sternomastoid and trapezius are innervated by cranial nerve xi. Sternomastoid enables head rotation and exion and divides each side of neck into two triangles: anterior and posterior triangles. Two trapezius muscles move shoulders and extend and turn head. Thyroid gland an important endocrine gland straddles trachea in middle of the neck. Synthesizes and secretes thyroxine (t4) and triiodothyronine (t3), which are hormones that stimulate rate of cellular metabolism.