Cells and Tissues
The "brain" of the cell that contains DNA.
Nucleus
The basic unit of structure and function in living things.
Cell
The process by which the body maintains a stable internal environment.
Homeostasis
The hard, outer layer of bone that provides strength.
Compact Bone.
This type of muscle is found only in the heart
Cardiac
The outermost layer of the skin.
Epidermis
This organelle is known as the "powerhouse" because it creates energy.
Mitochondria
A group of similar cells that perform the same function.
Tissue
When you are cold, your body does this to generate heat.
Shiver
The flexible tissue found at the end of bones to prevent rubbing.
Cartilage
Muscles you can consciously control, like your biceps.
Voluntary (accept skeletal)
The pigment that gives skin its color and protects from UV rays.
Melanin
This type of tissue carries electrical messages back and forth.
Nervous Tissue
A structure made of different tissues working together (e.g., the heart).
Organ
This organ helps regulate blood sugar by releasing insulin.
Pancreas
Connective tissue that attaches one bone to another bone.
Connective tissue that attaches a muscle to a bone.
Tendon
The middle layer of skin containing nerves and blood vessels.
Dermis
The jelly-like substance that fills the cell and holds organelles.
Cytoplasm
A group of organs that work together to perform a major function.
Organ System
This "system" uses hormones to help maintain balance.
Endocrine
The process of creating new blood cells happens here.
Bone Marrow
These muscles work in pairs; while one contracts, the other does this.
Relax
This substance produced by glands helps keep skin waterproof.
Keratin
This tissue provides support for the body and connects all its parts.
Connective Tissue
Arrange these in order: Organ, Cell, Organism, Tissue, System.
Cell, Tissue, Organ, Organ System, Organism
An example of this "loop" is when your body sweats to lower its temp.
Feedback (positive or negative)
The place where two bones meet, such as a hinge or ball-and-socket.
Joint
This type of involuntary muscle lines the digestive tract.
Smooth
The primary function of this system besides protection.
Temperature Regulation, Water Regulation, Sensory Input