Intergumentary system

Epithelial membranes

cutaneous membranes, mucous membranes, serous membranes

cutaneous membranes

skin, hair, nails

mucous membranes

line body cavities that open to the outside of the body
secrete mucous

serous membrane

lines cavities that do not open to outside of the body
serous fluid
parietal and visceral layer

respiratory system, digestive system, reproductive system

mucous membranes

peritoneum

surrounds abdominal cavity

pericardium

surrounds the heart

pleura

surrounds the lungs

peritoneum, pericardium, pleura

serous membranes

parietal layer

outer layer

visceral layer

inner layer

serous fluid

prevents friction and acts as a shock absorber

skin

integument

functions of skin

insulation, protection from UV, regulation of body temp, keeps bacteria out

structure of skin

epidermis and dermis

epidermis

top layer, avascular, keratinocytes, dead cells, melanocytes

keratinocytes

cells that produce a fibrous protein which makes the epidermal layer tough

melanocyte

cells that produce melanin when exposed to sunlight

dermis

second layer. papillary layer and reticular layer

dermal papillae

projections on the surface on the dermis

collagen and elastic fibers

(2) protein fibers that keep the dermis strong and elastic

adipose tissue

makes up hypodermis/subcutaneous layer

Cutaneous glands

sebaceous glands and sweat glands

sebaceous glands

oil glands, lubricates the skin and lowers pH to kill bacteria

sebum

oil produced by the skin

Eccrine sweat glands

all over the body, used for temperature regulation

Apocrine sweat glands

found in axillary and pubic regions, used to attract opposite sex

Burns

3 types, kills skin and leaves open to bacteria

1st degree burn

damages epidermis, sun burn

2nd degree burn

epidermis and papillary, forms blisters

3rd degree

epidermis and both layers of the dermis, no living skin or possible regeneration