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Week 5

by: Lynde Wangler
Lynde Wangler
GPA 3.836

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About this Document

These notes cover information after the exam.
Dr. Johna Register-Mihalik
Class Notes
Human Anatomy
25 ?





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This 3 page Class Notes was uploaded by Lynde Wangler on Wednesday February 17, 2016. The Class Notes belongs to EXSS 175 at University of North Carolina - Chapel Hill taught by Dr. Johna Register-Mihalik in Spring 2016. Since its upload, it has received 19 views. For similar materials see HUMAN ANATOMY in Physical Education at University of North Carolina - Chapel Hill.

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Date Created: 02/17/16
EXSS 175 WEEK 5 Muscles 1 (Quiz wed.-fri.)  Erector Spinae o Illiocostalis  3 parts: cervicis, thoracis, lumborum  Most lateral o Longissimus:  3 parts: capitis, cervicis, thoracis (no lumborum)  Medial (between spinalis and iliocostalis) o Spinalis:  3 parts: capitis, cervicis, thoracis  Closest to the spine o Transversospinalis:  3 parts: capitis, cervicis, thoracis  Affects opposite side – shortens and rotates head to the opposite side o Multifidus:  Run all up and down back  Moves vertebral column laterally and rotates head to the opposite side  Helps to maintain core stability o Rotatores:  Rotates vertebral column to the opposite side  Origin – transverse process of all vertebrae  Cervical Region o Platysma:  Attaches to skin  Depresses lower jaw o Sternocleidomastoid:  Superficial parts and deep to platysma  Tends to accumulate tension (clinical application)  Rotates head to opposite side o Anterior, medial (rotation to the same side), and posterior scalene (opposite side rotation):  Laterally flex to the same side  Very small and not major; common site of trigger points  Scalenes can become inflamed with bad posture and can restrict blood flow  Thoracic outlet syndrome – seen a lot in students and teachers  restriction of blood flow due to tension  Intercostal: o 1) External – more lateral; elevates ribs and helps with inhalation o 2) Internal – more medial; closer to the sternum and helps with expiration and depressing ribs  External Oblique: o Most superficial abdominal muscle o Runs like you’re putting your hands in your pockets o Rotate to the opposite side  Rectus Abdominis: o 6-pack o Sits just beneath your external oblique the thin tissue layer  Internal Oblique: o Sits deeps to external oblique o Runs opposite; back towards the pelvis o Help flex; help to rotate to the same side  Transverse Abdominis: o Muscle that runs horizontally around the abdomen o Tightens the core; compresses the abdomen  Diaphragm: o Closes space in thoracic (expands thoracic) and abdominal (compresses) cavities o Aids in breathing o Phrenic nerve (C4) innervation proper respiration cannot happen without the diaphragm functioning well  Quadratus lumborum: o Deep muscle of the back o Last rib to iliac crest o Common site of trigger points o Elevates hips hip shift people with lower back pain (clinical perspective)  Thoracic Wall and Shoulder Girdle o Pectoralis Major:  Big, fans out across chest  Superficial  Medial and lateral pectoral nerve  Adduction in a horizontal manner  Synergist (not primary) to internal rotation o Servatus Anterior:  Protract scapula “punching” muscle  Frontal/lateral side of ribs  Long thoracic nerve o Pectoralis Minor:  Deeper and smaller than major; only innervated by medial pectoral nerve  Anterior muscle of thorax  Elevates ribs during respiration and moves scapula downwards o Trapezius:  Upper, middle, lower  Superficial o Latissimus Dorsi:  Superficial  Attaches to humerus  Adduct humerus o Rhomboideus: (major/minor)  Scapular retraction  Minor is deeper and smaller o Levator scapula:  Elevates scapula  Superior to scapula and rhomboideus (major and minor)


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