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THORAX SURFACE ANATOMY . Student who cheated in anatomy lab: counted own ribs Males and Females have same number of ribs (no, Eve wasn’t formed from one of Adam’s) . STERNUM manubrium xiphoid process SCAPULA spine medial border inferior angle RIBS. BONES. BACK
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THORAX SURFACE ANATOMY Student who cheated in anatomy lab: counted own ribs Males and Females have same number of ribs (no, Eve wasn’t formed from one of Adam’s) Human Anatomy, Larry M. Frolich, Ph.D.
STERNUM manubrium xiphoid process SCAPULA spine medial border inferior angle RIBS BONES Human Anatomy, Larry M. Frolich, Ph.D.
BACK “traps” (trapezius) “lats” (latissimus dorsi) erector spinae (cords in lumber region, great for massage--aaaaahhhh) CHEST “pecs” (pectoralis major) serratus anterior MUSCLES Human Anatomy, Larry M. Frolich, Ph.D.
Fun and Fitness Muscle Website Human Anatomy, Larry M. Frolich, Ph.D.
INTERCOSTAL MUSCLES “COSTAL” = ribs “intercostal” = between the ribs Function in posture, respiration Human Anatomy, Larry M. Frolich, Ph.D.
The Breast • Location: (female breast) • Superior border: 2nd rib • Inferior border: 6th rib • Medial border: Sternum • Lateral border: Midaxillary line • Location: (male nipple) • Fourth Intercostal Space, Midclavicular line • Underlying muscle • Pectoralis major and minor • Part of serratus anterior, external obliques • Lateral Thoracic Artery, branches of Internal Thoracic A., Post. Intercostals • Intercostal, Internal Thoracic, Axillary Veins • Branches of Intercostal Nerve Human Anatomy, Larry M. Frolich, Ph.D.
Mammary Glands • Lactiferous (modified sweat) Glands • Breast made of 15-25 lobes (each a compound alveolar gland) • Lobes made of lobules called acini, alveoli • Acini/Alveoli lined w/milk-secreting simple epithelial cells • Lactiferous Ducts of lobes open at nipple • Areola-ring of pigmented skin around nipple • Sebaceous gland produce sebum during nursing • Lobes separated by adipose tissue and suspended by connective tissue = Suspensory Ligaments of the Breasts Human Anatomy, Larry M. Frolich, Ph.D.
Mammary Gland Human Anatomy, Larry M. Frolich, Ph.D.