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Cells and Tissues
Basic biology of cells and tissues
22
Biology
Undergraduate 1
03/26/2009

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Term
Cytoplasm
Definition
The contents of the cell, excluding the nucleus
Term
Cytosol
Definition
The viscous gell-like fluid in which organelles are suspended
Term
Mitochodria
Definition
Organelle with inner membrane folded into cristae, site of the Krebs cycle
Term
Ribosomes
Definition
Site of protien synthesis
Term
Nucleus
Definition
Largest organelle containing the nucleolus and chromatin (DNA & associated protiens)
Term
Rough Endplasmic Reticulum
Definition
System of membrane enclosed channels studded with ribosomes, use for storage of newly sysnthesised protiens
Term
Smooth Endoplasmic Reticulum
Definition
Site of fatty acid, phospholipid and steroid synthesis
Term
Tissue
Definition
A group of simmilar cells that function together to carry out specialised functions
Term
Epithilial tissue
Definition
Epithelial tissue covers the whole surface of the body. It is made up of cells closely packed and arranged in one or more layers
Term
Connective tissue
Definition
Made of cells surrounded by a fluid, semi-fluid, gelatinous, fibrous or calcified matrix
Term
Exocrine glands
Definition
Secrete oil, wax, sweat, milk and digestive enzymes into ducts for use outside the body (or in GI tract)
Term
Endocrine glands
Definition
Secrete hormones that diffuse into extra-cellular fluid or blood.
Term
Fibroblasts
Definition
Immature cells that secrete collagen, elastin & glycoprotien to form fibers in the matrix of connective tissue
Term
Chondroblasts
Definition
Found in cartilage, secrete the matrix of cartilage
Term
Osteoblasts
Definition
Produce the organic matrix of bone, become osteocytes
Term
Haemocytoblasts
Definition
Found in bone marrow, develop into red & white blood cells
Term
Adipocytes
Definition
Fat storage cells
Term
Leucocytes
Definition
White blood cells
Term
Macrophages
Definition
Large cells that are used for phagocytosis
Term
Mast cells
Definition
Produce histamine and heparin
Term
Plasma cells
Definition
Secrete anti-bodies, provide immunity
Term
Areolar Loose Connective Tissue
Definition
Widely distributed, with a matrix primarily made of collagenous fibers.
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