ES 207 Chapter Notes - Chapter 5: Eponychium, Basal-Cell Carcinoma, Golgi Apparatus
22 Dec 2016
School
Department
Course
Professor
Document Summary
Consists of skin and accessory structures (hair, glands, nails) Sensory receptors in the integumentary system detecting heat, cold touch, pressure, pain, texture (part of nervous tissue too) When exposed to uv light, skin makes a molecules that can be transformed to vitamin d (important regulator of calcium homeostasis and related to pathology) Amount of blood flow under skin and activity of sweat glands help regulate temperature. Small amounts of waste products are lost through the skin and gland secretions. Connects skin to underlying muscle or bone supplies it with blood vessels and nerves. Contains about half the body"s fat - stores so much energy (amount and location depend on age, sex, and diet) Fat in subcutaneous tissue function as padding and insulation (adipose) Responsible for differences in appearance of man and woman and individuals of same sex. Thickness depends on the location (average: dermis is 10-20 times thicker than epidermis) New cells push old cells up where they flake off.
