unit 2: tissues

haily alexander
Mind Map by haily alexander, updated more than 1 year ago
haily alexander
Created by haily alexander almost 4 years ago
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unit 2 tissues mind map

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unit 2: tissues
1 Epithelial
1.1 Function → protection, secretion, absorption, excretion Location → covers body surface, covers and lines internal organs, compose glands Characteristics → lack blood vessels, cells readily divide, cells are tightly packed together.
1.1.1 basement membrane : anchors epithelium to connective tissue.
1.1.2 Basement membrane : anchors epithelium to connective tissue
1.1.2.1 TYPES OF EPITHELIAL CELLS
1.1.2.1.1 Simple Squamous
1.1.2.1.1.1 lines blood vessels and air sacks of the lungs
1.1.2.1.2 Simple Cuboidal
1.1.2.1.3 Simple Columnar
1.1.2.1.4 Stratified squamous
1.1.2.1.5 Stratified cuboidal
1.1.2.1.5.1 lines ducts and glands.
1.1.2.1.6 Stratified columnar
1.2 <-epithelial tissue
2 Connective
2.1 Function → bind, support, protection, fill space , store fat, produce blood cells Location → widely distributed throughout the body Characteristics → Mostly have a good blood supply, cells are farther apart than epithelial cells, extracellular matrix in between
2.1.1 Major types of cells
2.1.1.1 Fibroblasts :produce collagen and elastic fibers
2.1.1.2 Macrophages are phagocytes (“eat cells”)
2.1.1.2.1 Connective tissue fibers
2.1.1.2.1.1 Collagen fibers have a great tensile strength.
2.1.1.2.1.2 Elastic fibers are composed of elastin and are stretchy.
2.1.1.2.1.2.1 Categories of connective tissues
2.1.1.2.1.2.1.1 Loose Connective Tissue
2.1.1.2.1.2.1.1.1 Areolar → forms thin membranes between organs and binds them together. Found beneath the skin and surrounds organs Adipose → stores fat, cushions, and insulates. Found beneath the skin; in certain abdominal membranes; and around the kidneys, heart, and various joints. Reticular → thin branched reticular fibers. Supports the walls of the liver and spleen.
2.1.1.2.1.2.1.2 Dense Connective Tissue
2.1.1.2.1.2.1.2.1 Dense Regular → strong collagen fibers that bind structures as parts of tendons and ligaments. Dense Irregular → thicker, randomly distributed collagen fibers and is found in the dermis. Elastic → elastic fibers that make up hollow internal organs like the lungs and blood vessels.
2.1.1.2.1.2.1.3 Cartilage
2.1.1.2.1.2.1.3.1 provides support Consists of fibers and a gel-like substances Lacks a direct blood supply, so it is slow to heal Found at the ends of various bones; in the ear; in the larynx; and in the pads between the bones of the spinal column, pelvic girdle, and knees Bone → matrix consists of mineral salts and collagen. Compact & spongy bones. Heals rapidly Blood → Composed of cells suspended in fluid. Produced in the tissue of hollow parts of certain bo
2.1.1.2.1.3 Reticular fibers are fine collagen fibers.
2.1.1.3 Mast cells may release heparin and histamine
2.2 connective tissue ->
3 Muscle
3.1 Function → movement Location → attached to bones, in the walls of hollow internal organs, heart Characteristics → Able to contract in response to specific stimuli
4 Nervous
4.1 Function → movement Location → attached to bones, in the walls of hollow internal organs, heart Characteristics → Able to contract in response to specific stimuli
5 Nervous
5.1 Function → conduct impulses for coordination, regulation, integration, and sensory reception Location → brain, spinal cord, nerves Characteristics → cells communicate with each other and other body parts
5.2 nervous tissue ->
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