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Human Body Rb (notQ)

TermDefinition
Homeostasis The maintenance of stable internal conditions in an organism.
Joint A place where two bones come together.
Spongy Bone Layer of bone tissue having many small spaces and found just inside the layer of compact bone.
Compact bone Hard dense bone tissue that is beneath the outer membrane of the bone.
Cartilige a firm and elastic and flexible type of connective tissue.
Ligament Strong connective tissue that holds bones together in moveable joints.
Tendon Strong connective tissue that attaches muscle to the bone.
Red marrow Produces many of the bodies cells.
Yellow marrow Stores fat that can serve as an energy source.
Skeletal muscle A muscle that is attached to the bones of the skeleton and provides the force that moves bones.
Striated muscle A muscle that appears banded; also called the skeletal muscle
Smooth muscle Involuntary muscle found inside many internal organs of the body.
Cardiac muscle Muscle tissue found only in the heart.
Integementary system Skin, protects, makes Vitamin D
Epidermis The outer layer of the skin
Dermis The inner layer of the skin
Melanin A pigment that gives skin color
Follicle Structure in the Dermis of the skin from which strand of hair grows
Mechanical Digestion Foods that are physically broken down into smaller peices
Chemical Digestion Chemicals produced by the body breaks foods down into smaller chemical building blocks
Epiglottis A flap of tissue that seals off the windpipe and prevents food from entering
Peristisis Involuntary waves of muscle contraction.
Esophagus A muscular tube that connects the mouth to the stomache
Absorption The process by which nutrients pass from the digestive system into the blood.
Villius Tiny small fingers that cover the inner surface of the small intestine and provide a large surface area through which digested food is abosrbed
Pacemaker A Group of cells located in the atrium that sends out signals that makes the heart muscles contract and that regulates heartbeat rate.
Artery A Blood vessel that carries blood away from the heart.
Capillary A tiny blood vessel where substances are exchanged between the blood and the blood cell.
Vein A blood vessel that carries blood back to the heart.
Plasma The liquid part of the blood.
Red Blood Cells A cell in the blood that takes up oxygen in the lungs and delivers it to cells elsewhere in the body.
Hemoglobin An iron-Containing protein that binds chemically to oxygen molecules.
White Blood Cells A blood cell that fights disease.
Platelet A cell fragment that plays an important part in forming blood clots.
Lymph Node A system that filters lymph. Trapping bacteria and other microorganisms that cause disease.
Lymph The fluid that the lymphatic system collects and returns to the bloodstream
Cillia The hairlike projections on the outside of cells that move in a wavelike manner.
Pharynx The throat.
Trachea The windpipe. A passage through which air moves in the respiratory system.
Alveoli Tiny sacs of lung tissue specialized for the movement of gases between air and blood.
Diaphram A large muscle located at bottom of a mammals rib cage that functions in breathing.
Larynx The voice box.
Urea A chemical that comes from the breakdown of proteins.
Ureter A narrow tube that carries urine from one of the kidneys to the urinary bladder.
Kidney A major organ of the execratory system that removes urea and other wastes from the blood.
Nephron Small filtering structure found in the kidneys that remove wastes from the blood and produces urine.
Urinary Bladder A sack like muscular organ that stores urine until it is eliminated from the body.
Excretion The process by which the wastes are removed from your body.
Urethra A small tube through which urine flows from the body.
Cardiovascular System The body system that consists of the heart, Blood vessels , and blood; Circulatory system
Atrium Each of the two upper chambers of the heart that recieves blood that comes into the heart.
Valve A flap of tissue in the heart or vein that prevents blood from flowing backward.
Ventricle A lower chamber of the heart that pumps blood out of the lungs and into the body.
Coronary Arteries An artery that supplies blood to the heart itself.
Arteries A blood vessel that carries blood away from the heart.
Pulse The alternating expansion and relaxation of an artery wall as blood travels through an artery.
Diffusion The process by which molecules move from an area of higher concentration to lower concentration.
Blood Pressure The pressure that is exerted by the blood against the walls of the blood vessels.
Heart attack A condition in which blood flow to part of the heart is blocked causing heart cells to die
Pathogens Viruses that infect the body.
Infectious Disease A disease caused by the presence of a living body.
Toxin A poison produced by bacterial pathogens that damage cells.
Phagocyte A white blood cell that destroys pathogens by engulfing them and breaking them down.
Inflammatory Response Defense system:a fluid + white blood cells leak from blood vessels into tissue and the white blood cells destroy pathogens
B Cells A lymphocyte that produces proteins that help destroy pathogens.
Anti-Bodies A protein produced by the B Cells of the immune system that destroy pathogens.
Anti-Gens A molecule the the immune system recognizes either as part of the body or as coming outside the body.
T Cells A lymphocyte that identifies pathogens and distinguishes one pathogen from another.
Immune Response Part of the body's defense against pathogens,in which cells of the immune system to react to each kind of pathogen with a defense targeted specifically for pathogens.
Created by: Sweete