week 3 - tissues/ integumentary Flashcards
Tissues
made up of cells and other
components that have a similar function.
Different tissues will be combined to form
ORGANS
Histology
study of tissues
4 basic types of tissues in body
- Epithelial
- Connective
- Muscle
- Neural
Epithelial tissue
• Provide physical protection
• Control permeability (passage of
substances including absorption and
filtration)
• Produce specialized secretions
Epithelial cells
squamous, cubical, columnar/// simple stratified
Glands
produce secrentions//endocrine glands and exocrine glands
endocrine glands
(secrete hormones into interstitial
fluid so they can enter blood and travel to cells
exocrine glands
(secretions into ducts that open onto
epithelial surface)
Connective tissues
support and connect other tissues
• Many have blood vessels and sensory receptors
epithelial tissue is found
skin
three basic components to connective tissue
1-specialized cells
2-Extracellular proteine fibers
3-fluid
Matrix
forms complexes with proteins producing proteoglycans
types of connective tissues
cartilage and bone
Muscle tissue types
skeletal
smooth
cardiac
cardiac
Heart
move blood and maintain blood pressure
smooth
all throughout body(organs +blood vessels)
moves food, urine and reproductive secretions
control diameter of respiratory passageways
skeletal
found in skeleton
moves skeleton
guard and protect organs
nervous tissues cells
neurons
nueroglia
neuron
brain+spinal cord
Sends electrical signals
neuroglia
Brain+spinal cord
support protect and nourish neurons
fluid connective tissues
blood (rbc,wbc platelets) and lymph
muscle tissue functions
all revolve around movement
integumentary system
Body first line of defense against environment
maintain body temperature(sweat)
detection of sensory information
produces keratin and melanin
Layers of skin
Epidermis
Dermis
Accessory structure of integumentary system
Hair
Sweat gland
Sensory receprots
sebaceous gland
arrector pilli muscle
Layers of dermis
Stratum Corneum
Stratum lucidum
Stratum granulosum
Stratum spinosum
Stratum basale
Keratinocytes
Originate in Basale layer
Produce Keratin- strengthens epidermis
Dies going up the ladder
Melanocytes
Found in Basale layer
Produce melanin to prevent damage from Uv light
Hypodermis
separates skin from deeper structres
allows inmderpendetn movement
nominated by adipose tissue
Sebaceous Gland
discharge oily lipid secretion
lubricates skin and hair
Sweat glands
produces sweat
cools body down
Frontal bone
Forehead
Parietal bone
top, back of head
temporal bone
Bottom, side of head
occipital bone
Bottom back of head
mandible
Jaw area
maxilla
Mouth area
hyoid bone
Adams apple area
cervical vertebrae
Top, by neck of spine
thoracic vertabrae
Middle, by ribs of spine
lumbar vertabrae
Bottom of spine
sacrum
V shaped, very bottom of spine
coccyx
Connects spine and sacrum, very thick
sternum
Connects ribs, in middle
ribs (1-12)
Ribs
Clavicle
Collarbone
scapula
Big disk on back
humerus
First, big bone in arm
Radius
Thick bone connected to thumb
ulna
thinner bone
carpals
Wrist
metacarpals
Palm area
proximal phalanx
Closest part of finger top body
middle phalanx
middle of finger
distal phalanx
Tip of finger
illium
Front of pelvis, big part
ishcium
Butt are, boney, back of pelvis
pubis
front pelvis, small part
femur
Big, first leg bone
patella
Knee cap
fibula
Bottom leg. first bigger bone
tibia
Bottom leg, second smaller, behind bone
tarsals
Front of foot
metatarsals
Middle of foot
proximal phalanx (foot)
Closest toe bone to body
middle phalanx (foot)
Middle of toe
distal phalanx (foot)
Very end of a toe