A&P Chapter 4

Tissues

Similar cells with the same function

Epithelial Tissue

Cover or line organs and forms inner lining of body cavities.

Stratified squamous epithelium

found in skin , throat- layers to provide protection from injury

Simple columnar epithelium

found in digestive tract, secretes chemicals and absorbs nutrients

Pseudostratified ciliated epithelium

found in trachea or Fallopian tubes and has cilia to help with movement of mucus or egg.

connective tissue

living cells in a non-living matrix

matrix

intracellular substance in which connective tissue is housed

loose connective tissue ~Aerolar

found in skin, around blood vessels, helps hold organs in place

dense connective tissue ~ dense regular

found in tendons and ligaments, helps hold bone to bone or muscle to bone.

blood

red blood cells, white blood cells, platelets, all in a liquid plasma matrix. Functions to bring oxygen and other nutrients to various parts of the body

bone tissue

provides a framework for muscles and other tissues, also stores nutrients and minerals

hyaline cartilage

found on the ends of bones, provides bone-to-bone surface protection - end of nose & growth plates as well

elastic cartilage

found in the ears, provides flexible structure

fibrocartilage

found in between vertebrae and provides compression protection between bones

Loose connective tissue~ adipose tissue

found throughout the body, stores lipids , insulation, protection, and long term energy

nervous tissue~ neuron

found in the brain, spinal cord, and nerves, allows for cells to communicate

smooth muscle

involuntary muscles that that is found in one layer of hollow organs, For example, stomach, arteries, intestines

skeletal muscle

voluntary muscles that allows for body movement

cardiac muscle

involuntary muscle that keeps the heart beating

The 4 primary types of tissues

muscle, nervous, epithelial, connective

simple cuboidal epithelium

secretion and absorption ~ single layer of cubed shaped cells

simple squamous epithelium

Function: Allows passage of materials by diffusion and filtration in sites where protection is not important.

Location: air sacs of lungs, lining of heart, blood vessels,

muscle tissue

Tissue made of cells capable of contracting.

dense irregular connective tissue

Function: able to withstand tension exerted in many directions; provides structural strength

Location: dermis of the skin;

Lacunae

small space containing a chondrocycte or osteocyte