LAB 3 Histology Flashcards
4 Main Types of Tissue
- Epithelial tissue
- Connective tissue
- Muscle tissue
- Nervous tissue
Epithelial tissue types
- simple epithelial tissue
2. stratified epithelial tissue
simple epithelial tissue
- simple squamous: alveoli, serosa, endothelium, glomeruli
- simple cuboidal: mammary and salivary glands, kidney tubules, thyroid, liver
- simple columnar: lining of GI tract, uterus, kidney and uterine tube
- psuedostratified columnar: respiratory tract, portions of male urethra
stratified epithelial tissue
- stratified squamous
- keratinized: soles of feet and palms of hands
- nonkeratinized: oral mucosa, tongue, esophagus, vagina
- stratified cuboidal: sweat gland ducts, ovarian follicles, and seminiferous tubules (sweat, sperm, ovaries)
- transitional epithelial: bladder and ureter
Connective tissue types
- Fibrous
- Cartilage
- Bone
- Blood
- Adipose
Fibrous connective tissue
- loose
- areolar: btwn muscles, serous membranes, passageways for nerves and blood vessels
- reticular: lymph nodes, spleen, thymus, bone marrow
- Dense
- dense regular: ligaments and tendons
- dense irregular: dermis and organ capsules
cartilage connective tissue
- hyaline cartilage: costal cartilage trachea, larynx, fetal skeleton
- elastic cartilage: external ear, epiglottis
- fibrocartilage: menisci, pubic symphysis, and intervertebral discs
bone connective tissue
- spongy: heads of long bones and middle of flat bones like sternum
- compact: shafts of long bones
blood connective tissue
- plasma–blood’s ground substance
2. formed elements: erythrocytes (RBC), leukocytes (WBC), thrombocytes (platelets)
adipose connective tissue
- white fat: organ insulation, cushion for eyeballs and kidneys, breasts, hips
- brown fat: fetuses, infants, and children—heat producing
Muscle tissue
- skeletal
- smooth
- cardiac
skeletal muscle tissue
- striated (striped)
- multiple nuclei
- voluntary movement
cardiac muscle tissue
- striated
- 1-2 nuclei
- branched
- involuntary movement
smooth muscle tissue
- smooth
- spindle shaped
- single nucleus
- involuntary movement
Nervous tissue
- neurons–send and receive messages
- neuroglias–support neuron activities: astrocyte, microglia, ependymal cell, satellite cell, schwann cell
they make up the majority of the brain, spinal cord, and nerves
basement membrane
- layer btwn an epithelium and underlying connective tissue
- collagen, glycoproteins, protein-carbohydrate complexes
basal surface
surface of epithelial cell facing the basement membrane
apical surface
surface of epithelial cell that faces away from the basement membrane
three parts of tissues
- cells
- fibers
- ground substance
fibers and ground substance = the matrix
goblet cells
- mucous secreting cells
- in simple columnar and psuedostratified columnar epithelia
cell types (8 of them)
- fibroblast
- leukocyte (WBC)
- macrophage (help with immune system–eat things)
- mast cell-found alongside blood vessels, inhibit clotting
- adipocyte–fat cell
- chondrocyte–cartilage
- chondroblast–have lacunae
- osteocyte–bone
*"-blast" = immature "-cyte" = mature
fiber types (3)
- collagen–tough, flexible, stretch-resistant
- elastin–stretch and recoil
- reticular–thin collagen fibers with glycoprotein