Umme Aimen Tailor - Chapter 3.2: Histology

what is the function of connective tissue?

to connect and support the other tissues of the body

how are connective tissues classified?

based on the type of cell and the intercellular matter found between the cells

what is areolar loose connective tissues?

fibroblasts (collagen, elastin), macrophages, and mast cells

what are fibroblasts?

collagen and elastin

what are macrophages?

cells that engulf foreign agents

what are mast cells?

cells that secrete histamine and other chemical mediators of inflammation

what is inflammation?

dilation of blood vessels, permeability of blood vessels, and stimulation of pain fibers

what does erythema mean?

dilation of blood vessels

what is edema?

swelling

what two proteins are secreted by fibroblasts?

collagen and elastin

what is collagen?

a protein fiber that provides strength to a tissue

what is elastin?

a protein fiber that provides elasticity to the tissue

what is adipose tissue?

fat tissue

what is the function of adipose tissue?

provide a reserve for food, insulates against heat loss, supports and protects the organs it encloses

what are three common locations of adipose tissue?

under the skin (subcutaneous fat), around the kidneys and eyeballs, buttocks, and breasts

what are the two subtypes of dense fibrous connective tissue?

regularly arranged and irregularly arranged

what are five places where dense fibrous connective tissue is common?

tendons, ligaments, dura mater, fascia, perichondrium, and periosteum

what does peri mean?

around

how do regularly arranged dense fibrous connective tissue look?

parallel bundles

how do irregularly arranged dense fibrous connective tissues look?

interwoven, running in all directions

what is special about cartilage tissue, unlike other connective tissue?

it is avascular

what are the three subtypes of cartilage?

hyaline cartilage, fibrocartilage, and elastic cartilage

what are four locations where hyaline cartilage is found?

long bones of the body, front of the nose, trachea and larynx, surfaces where two bones meet

where is fibrocartilage found?

in between vertebra

where is elastic cartilage found?

the external ear