Homeostasis And Body Temperature Essay

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Homeostasis and Body Temperature
The Transport Systems
Cardiovascular System: pumps blood to and from capillaries for exchange of gases, nutrients and wastes occur.
Red Blood Cells: carry oxygen
Platelets: Clot blood
Lymphatics: collect excess tissue fluid and purify lymph.

Lymph: a clear-to-white fluid made of: White blood cells The Maintenance Systems
Respiratory system: brings in O2 and removes CO2 from the blood
Digestive system: digest nutrients and removes waste
Liver: manufactures products (bile) and detoxifies
Kidney: fluid balance, pH regulation and waste removal The Support Systems:
Integumentary system produces vitamin D
Skeleton system stores minerals such as calcium and produced blood cells
Muscular system produces heat. The Control Systems
Nervous System and Endocrine System function as control centers
Direct effectors to become active
Muscles bring about an immediate change.
Glands secrete hormones that bring about a slower, more lasting change that keeps the internal environment relatively stable

Types of Tissues
Four types of body tissues found in the human body.
Connective Tissue- supports and bonds the body parts
Muscle Tissue: moves the body and its part
Epithelial Tissue: lines the body surfaces and cavities
Nervous Tissue: receives stimuli and conducts impulses

Epithelial Tissue: consists of tightly packed cells that form a continuous layer. Epithelial tissue covers surfaces and lines body cavities Epithelial Tissue Cell Type Number of Layers

Sqaumous Cuboidal Columnar Simple Stratified Pseudostratified

Pseudostratified epithelium appears to be layered, but true layers do not exist because each cell touches the basement membrane
Simple epithelium has a single layer of cells, whereas stratified epithelium has layers of cells piled one on top of another.
Classification of Epithelium
Description
Function
Location
Simple

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