Chapter 20  Animal Structure and Function

Homeostasis - staying the same on the inside, while conditions change on the ________________.  

_______________ - anything creates an imbalance in the internal environment.    Example:



Negative feedback - feedback produces a negative response; enough of something makes ___________ of it;
example:  a/c in house, insulin, glucagon.    

Positive feedback - feedback produces ______________ response; enough of something makes more of it;
example:  a/c in car, oxytocin during childbirth, blood clotting.    

Disease - one of more components of the body ______________ their homeostatic ability; a noticeable impairment
of bodily function.

Cell - a bunch of ________________ get together.  

Tissue - group of ___________ work together to do a particular function; epithelial, muscle, connective, and
nervous tissues.

Organ - several ________________ get together.    Example:


Organ system - several ______________ working together.    Example:


Epithelial tissue - covers and lines exposed surfaces; ____________, inside organs.  

Epithelial cells are usually very _____________ to the next cell.

Apical surface - exposed side.    

Basal surface - unexposed ____________ anchoring to the rest of body.    

Avascular - there is no ____________ supply to epithelium.

Simple epithelium - a ______________ layer of cells

Stratified epithelium - more than one layer or type

Squamous - ___________ cells

Cuboidal - ____________ shaped cells

Columnar - _____________________ shaped cells

Pseudostratified epithelium - not all columns reach _____________ surface.  

Endocrine glands - secrete hormones into the ____________________.    Example:



Exocrine glands - secretions _________ the body.    Example:


Mucus membrane - lines ______________ cavities opening to exterior.

Connective tissue - connects body together.    Example:


Cells surrounded by matrix instead of each other.

Red blood cells - carry ______________ to all your cells and take carbon dioxide to your lungs.

_______________ blood cells - are part of your immune system.

Platelets - ________________ blood.

Cartilage -  has no blood vessels; avascular; often found between ______________.  

Bone - has blood vessels and ______________; supports the body.

Adipose - stores _____________.  

Fibrous connective tissue - tendons and ligaments.

Tendon - cord that connects _______________ to bone

Ligament - connects _____________ to bone

______________ tissue - moves your body parts.

Skeletal muscle - striated; voluntary; ________________ muscles

Cardiac muscle - striated; involuntary; ____________ muscle

___________ muscle - nonstriated; involuntary; walls of hollow structures.    Example:


Nervous tissue - sends ______________ messages throughout the body.

Neuron - one nerve ____________________ that transmits electrical impulses.

Dendrite - ____________ nerve information

Cell body - processes _______________ information

Axon - sends information on to the __________ cell

Organ - several ____________ get together.

Organ system - several ______________ working together.   

Digestive system - takes in food, breaks it into small chemical units, and absorbs nutrients.    Example:


Respiratory system - takes in oxygen and releases carbon dioxide.    Example:


Cardiovascular system - delivers oxygen to cells and picks up carbon dioxide.    Example:


Lymphatic system - ____________ system.    Example:


Urinary system - makes urine.    Example:


Endocrine system - secrete hormones for ______________ term messages.    Example:


Reproductive system - makes _____________ generations.    Example:


Nervous system - sends out ______________ messages.    Example:


Muscular system - moves your body.    Example:


Skeletal system - ___________ to move your body.    Example:


Integumentary system - protects you from drying out.    Example:




Last updated: 4-5-06.
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