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Human Biology 1st Exam
Week 2
21
Biology
Not Applicable
09/17/2005

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Term
Locations of epithelial tissue
Definition
Lines and covers: lines the stomach and the nose, small tubes of the kidneys, lining of lungs, and blood vessels, lining of respiratory system, lining of reproductive system, top layer of skin. Also glands.
Term
function of epithelial tissue
Definition
keeps body from losing moisture and drying out, protects against injury to internal structure, helps prevent against bacterial infection
Term
structural feature common to all connective tissue
Definition
contains an extracellular matrix
Term
Describe the arrangement of muscle cells in tissye
Definition
Muscle cells, or fibers are grouped into fascicles, by connective tissue called perimysium. The fascicles are bound by epimysium into a muscle. So, muscle tissue is connective tissue plus muscle cells.
Term
Function of nervous tissue
Definition
-convey nerve impulses
-coordinate activities and movements of the body through a network of nerves
Term
Structure of a nerve
Definition
. A nerve fiber ( which is actually an axon or dendrite) is gathered together with other nerve fibers into a fascicle. The fascicle is surrounded by perineurium, and several fascicles are gathered into a nerve, surrounded by epineurium.epineurium
Term
Nucleus Function and structure
Definition
function-cell's control center
structure-enzymes surrounded by a membrane
structure-contains chromatin, proteins, DNA, and RNA
Term
Ribosome structure and function
Definition
-RNA + enzymes
-assembles proteins from amino acids (assembly directions are given by RNA)
Term
Rough Endoplasmic Reticulum - structure and function
Definition
structure-Site of attachment for ribosomes
structure-enzymes surrounded by a membrane
function- modifies proteins produced by ribosomes
Term
Smooth Endoplasmic Reticulum function and structure
Definition
function- fat (lipid) production
structure-enzymes sur. by membrane
Term
Golgi apparatus function and structure
Definition
function-recieves, processes and packages proteins to be used by the cell or transferred out of the cell
structure-enzymes surr. by membrane
Term
Mitochondria function and structure
Definition
function-Produces ATP (transfers stored energy in sugars to something the cell can use i.e. ATP)
structure-Enzymes surr. by membrane
Term
Vesicles function and structure
Definition
function-Contains enzymes produced by the cell and secretes them at cell membrane
structure-enzymes surr. by membrane
Term
Lysosomes function and structure
Definition
function-gets rid of toxins like bacteria, unwanted substances, and worn out organelle
structure-enzymes surr. by membrane
Term
Peroxisomes function and structure
Definition
-Makes enzymes that oxidize some cell substances (burning is a type of oxidation)
-enzymes surr. by membrane
Term
cell membrane function and structure
Definition
function-encloses contents of cell
function-regulates flow of substances in and out of cell
structure-phospholipid bi-layer w/ embedded proteins
Term
chromosomes function and structure
Definition
function-contain and reproduce genetic material i.e. DNA
function of DNA-directions to make proteins
structure-made of coiled DNA and protein,
Term
Cytoskeleton function and structure
Definition
function-internal framework
function-moves cell and things inside cell
structure-made of protein
Term
three types of epethelial tissue
Definition
Columnar, Cuboidal, Squamous
Term
four types of tissue
Definition
connective, epithelial, muscle, nerve tissue
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