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A&P Ch 21 & 22
Ch 21&22
Term | Definition |
---|---|
Anatomy | Study of body stuctures |
Physiology | Study of body function |
Epithelial Tissue | covers the body and most organs |
Muscle Tissue | contracts and relaxes,can be voluntary or involuntary |
Nervous Tissue | sends electrical messages |
Organs | made up of 2 or more tissue types |
Homeostasis | the relative consistency of the body's internal environment |
Anatomical Position | standing upright, facing forwards with arms at the sides and palms facing forward |
Transverse Plane | divides body into superior and inferior sections |
Anterior | front |
Superior | towards the head/upper |
Distal | away |
Lateral | further away from the midline of the body |
Medial | closest to the midline of the body |
Superficial | closer to the surface |
Proximal | toward/near the trunk or point of origin |
Abdominal Cavity | contains most of the digestive organs |
Pelvic Cavity | contains the bladder and internal reproductive organs |
Metabolism | overall chemical functioning of the body |
Carbohydrates | used to make energy |
Triglycerides | used to store energy |
Proteins | the structural materials for building solid body parts |
DNA | contains genetic information of the cell |
Body Temperature Regulation | plays a role by dilating or constricting blood vessels |
Vitamin D Production | uses sunlight exposed to convert a molecule to Vitamin D for calcium absorption |
Epidermis | contains keratin |
Dermis | contains all major tissue types |
Hypodermis | also known as the subcutaneous layer |
Subcutaneous layer | made up of mostly adipose tissue and loose connective tissue |
Cyanosis | bluish discoloration of the skin resulting from low oxygen |
Melanin | a pigment that absorbs UV radiation from sunlight |
Arrector Pili | responsible for causing goosebumps |
Inflammation | redness, swelling, warmth and pain |
Melanoma | most aggressive type of skin cancer |
Rule of 9's | use to estimate extent of burns |
ABCDE rule | lists signs & symptoms of malignant melanoma |
Cellulitis | inflammation of connective tissues caused by bacteria |
Alopecia | hair loss |
Herpes Simplex | caused by a virus |
Pediculosis | caused by a parasitic lice |