Lab 7 Tissues Flashcards
epithelial tissue
- protect tissues underneath
- selectively permeable membrane
- sensory surface
simple epithelium
one layer
- squamous are irregular and flat. line lungs
cuboidal and columnar: cubes and columns. link GI tract and ducts. have cillia
stratified epithelium
multiple layers
- upper layer is squamous, middle is cuboidal and basal is columnar
glandular epithelium
- highly modified epithelial cells.
- line liver, mammary glands, pancreas
pseudostratified
appear stratified but are simple based on arrangements
found in respiratory system
loose connective tissue
a mass of proteins that form a ground substance (ex. collagen, elastin, reticulin, macrophages, adipose tissue)
reticulin (LCT)
thin branch fibre that supports glands and junctions between tissues (Loose connective)
macrophage (LCT)
small round cells that are immune first response (loose connective)
adipose tissue (LCT)
contain fat. have nucleus but it is squished to the side
dense connective tissue
tightly packed collagen fibers, pretty strong
SPECIAL connective tissue
blood cells: plasma has the cells
cartilage
bone
erythrocytes
rbc
leukocytes
WBC
plateletes
bone marrow cells
cartilage
matrix of chondrin and collagen secreted by chondrocytes
chondrocytes
secrete chondrin for cartilage and reside in cavities called lacunae
bone
bone cells are osteocytes. form in concentric layers called lamellae. Haversian canals in the middle
haversial canals
surround blood vessels and nerve cells through bone and co,,tunicate through Canaliculi
muscle tissue
made of actin and myosin. bundles of these are called myofibrils
types of muscle
skeletal. cardiac and smooth
cardiac muscle
HAS INTERCALATED DISKS THAT ORGanize them into fibres
- these form channels to have electrical signals to move
- also branched (only type of muscle to have this)
- has fewer nuclei than skeletal
nervous tissue
contain neurons, and support cells called glial AKA Schwann cells
neuron parts
cell body with nucleus, dendrites are extensions, axons carry nerve impulses to the axonal end to release neurotransmitters
Basement membrane
a protein layer epithelial cells sit on
ALWAYS
microvilli onto of columnar cell
stomach
flagella onto of columnar cell
sperm
fibroblasts
Loose and dense connective tissue consist of cells called fibroblasts that make connective tissue fibers
- make collagen, elastin, reticulin
lung tissue
looks empty but here, there are lots of alveoli that are lined by simple, squamous epithelium
reticular tissue
very corky in elasticity
Granulocytes
cAN see granules
Neutrophil, Eosinophil, Basophils
Neutrophil
neutral staining, most numerous
Eosinophil
usually rare unless there is an infection. acid staining, kills nematodes
basophils
basic staining, turn into mast cells involved in inflammation
Monocytes
macrophage. digest and engulf bacteria.
Lymphocytes
make antibody, help macrophages, kill specific target cell
Erythrocytes
red blood cells filled with hemoglobin
Platelets
cell fragments used in clotting
osteon
a circle of bone tissue
hyaline cartilege
found in joints. most present in body
elastic cartilege
found in ear and nose
fibro cartilege
found in skull. strongest kinds of fibers
smooth muscle
has tapered ends <0>
- one central nuclei
skeletal muscle
has striations. lots of nuclei and mitochondria
simple squamous epithelium
one layer, minimal barrier to diffusion, line lungs, kidneys and major cavities. associated with movement of minerals
simple cuboidal and columnar epithelium
line respiratory and intestines, secrete fluid
