IPHY 3410 Lecture Notes - Lecture 3: Periosteum, Blood Sugar, Diaphysis
13 Sep 2016
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Drawing activity #2: draw a cross section of the integument, labeling as many of the layers, cell types, and specialized structures that you can recall. Fine: thinner diameter: cells of hair added at bulb from epithelium of follicle. Medulla: loosely packed large cells center of hair. Cortex: many layers of flatten, pigmented cells just outside the center: straight vs curly hair: cross sections of hair shafts. Dividing line between epithelial and dermal tissue. Very outside is connective tissue root sheath = dermal tissue. Most common cause change in hormone levels, particularly androgens (dihdyrotestosterone or dht), affect follicles by shrinking them. 99% cure rate: squamous cell carcinoma abnormal cells arise from keratinocytes of stratum spinosum. The constriction of these vessels pulls on the surrounding dermis and epidermis. Bone and cartilage in the adult skeleton and body: bones: approx. Provides flexibility: clicker question: your skeletal system is an organ system.
