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Glossary of Considering God's Creation: Man

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ovum
the female reproductive cell
pregnant
to be with child
sperm
the male reproductive cell
spirit
the eternal part of man
uterus
the womb; the female organ where the baby develops before birth
cell membrane
the covering of the cell, which acts like a "guarded wall", controlling what enters or leaves the cell
cell
the simplest unit of structure of living things
centrioles
rod-shaped structures that function like "magnets" during cell division
chromosomes
contain the cell's genetic information
DNA
(deoxyribonucleic acid) an arrangement of amino acids that contain the genetic "master plan"
endoplasmic reticulum
sheets of membrane that provide "transportation" for protein within the cell
Golgi body
a group of flattened membrane sacs that "package" protein
lysosomes
the "garbage disposal system" of the cell, which dispose of invading materials and bacteria
mitochondria
the cells "power plants" and produce the cells energy
nucleus
the "control center" of the cell which controls and directs all the cell's activities
ligaments
strong fibers that connect the bones
marrow
the soft center of bones
skeleton
the framework of the body
digestion
to prepare food to be absorbed into the blood
esophagus
the tube from the mouth to the stomach
gall bladder
the small sac which stores bile produced by the liver
intestines
the bowels, the tubing from the stomach to the anus
liver
the organ which secrets bile
pancreas
the digestive gland behind the stomach
peristalsis
rippling contractions of the muscles in the intestines
rectum
lower portion of the large intestines
stomach
the chief organ of digestion
arteries
blood vessels going away from the heart
blood
the red, slightly thick (viscous) liquid that circulates in man and animals
capillaries
network of tiny blood vessels connecting arteries and veins
heart
a special muscle that pumps blood to all parts of the body
plasma
the liquid part of your blood that carries the food to each cell
platelets
plate shaped cells that help to seal off broken blood vessels
red corpuscles
red blood cells, the part of the blood that carries oxygen to the cells and carbon dioxide away from the cells
veins
blood vessels going toward the heart
white corpuscles
white blood cells which serve to fight infection
alveoli
tiny air cells int he lungs
trachea
the windpipe or tube in the throat which connects the mouth and nose to the lungs
autonomic
self-governing
nerve
fiber which sends or receives messages from the brain
parasympathetic
a part of the nervous system that control involuntary vital functions in an energy conserving way
sympathetic
a portion of the nervous system that controls involuntary vital functions and the "fight or flight" response
adipose tissue
fatty tissue
dermis
living layer of skin below epidermis
epidermis
outer layer of skin, made up of dead cells
hair follicle
glands which produce thread like growth
integumentary
protective layer of tissue covering body
oil gland
cells which produce a greasy liquid
sweat gland
cells which produce perspiration or moisture from skin
bladder
a muscular bag in the pelvis that collects the urine
endocrine
tissues and organs that produce internal secretions
excretory system
the parts that expel wastes from the body
kidneys
a pair of organs that excrete urine
ureter
the tubes from the kidneys to the bladder
urine
a yellow colored liquid that contains water soluble wastes from the body
extensors
muscles that extend or stretch out
flexors
muscles that flex or bend up
involuntary muscles
muscles which work without conscious thought
muscle
a band of fibrous tissue that can produce movement
voluntary muscles
muscles we can move at will

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