MOD 3 - COURSE 1 - PT 3 - Organ systems Flashcards
what is an organ
formed by function grouping of multiple tissue - perform one or more function
what are the 11 major organ systems in vertbrates
- integumentary
- skeletal
- muscular
- circulatory
- lymphatic
- respiratory
- digestive
- urinary
- reproductive
- vervous
- endocrine
what is the integumentary organ system
- skin protect body from damage
function of skin
- waterproof
- cushion
- excrete waste
- regulate temp
- sensory
- pressure
- temp
what are the 3 layers of skin
epidermis
dermis
hypodermis
what is the epidermis
- outer layer - arranged layer of cell - new cells - base - move to surface
what is the dermis
- layer directly under epidermis - made up fo elastin connective tissue
- contains - nerves, hair follicles, blood vessels and some glands
what is the hypodermis
- innermost - thickest - attached to dermis through collagen and elastin fibers
- specialised in accumulation and storing fats - adipocytes
what are the 4 types of glands
- integumentary glands
- mucus glands
- sebaceous glands
- sweat glands
function and location of inegumentary glands
- open surface of skins - secretes fluids - protect, lubricate, regulate temp
function and location of mucus glands
- release muscus - surface of agastric, resp and vaginal tract
function and location of sebaceous glands
- lubricate skin
function and location of sweat glands
0 regulate body temp
what is the functions of skeletal organ system
- framwork of body - supports and maintains shape - provides aniaml with support ad protection - help it to move and protect body
- provides point of attachement for mscules - by tendons
- blood cell protection in bone marrow
- in bone matrix - calcium & iron sotrage and metabolism
- endocrine regulation - bone relases hromons - osteoclacin - contribute to regulation of glucose and fat depositsw
what are the 2 types of tissue in vertebrate skeleton
- bone
- cartilage (temp and permanent)
what is the lifecycle of bones
- begins as temporary cartilage - soft and flexy -
- become hardens - caalcium incroperates - transforms into bone
where is there permenant cartilage
- ear
- rib
- intervertebral disk
- joint surfaces
- larynx
- trachea
what are the 4 types of bones (based of shape)
long
short
flat
irregular
example of long bones
- femur
- tibia
- fibular
- humerus
- radius
- ulna
- phalanges
examples of short bones
- carpals
- tarpals
examples of flat bone
- rib
- scapular
- parts of cranium
examples of irregular bones
- vertebrate
- mandible
- parts of pelvis
mouse skeletal structure (find pic)
- madible - lower jaw
- scapular - shoulder
- humerus - upper arm
- radius and ulna - lower arm
- sternum - lil bone of ribs
- femur - upper leg
- ribia and fibia - lower leg
functions of organ system - muscle
- capable of contraction and movement
- most of heat = movement by product
- contract when stimulated by nerve
