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what do electrolytes do in plasma?
they are resonsible for membrane excitability, osmotic distribution of fluid between ECF and ICF, and buffer pH changes
what is a cell
a basic unit of life
what is the difference between exocrine and endocrine glands
Exocrine glands retain connection with surface epithelium via a duct e.g. salivary glands secrete via salivary duct
Endocrine glands lose connection to surface and secretes into the blood e/g/ thyroid gland secretes hormones into blood
what does blood consist of?
Consists of 3 types of specialized cellular elements suspended in plasma:
Erythrocytes
Leukocytes
Platelets
what are the types of muscle tissue
Skeletal muscle
Smooth muscle
Cardiac muscle
is bone a static tissue
no, it is remodelled constantly. it is constantly being broken down and built up. this process allows us to yield calcium which can be used in a variety of body functions when required
what are the types of tissue?
Epithelial Tissues
Connective Tissue
Muscle
Nerve
how many types of tissue are there?
there are only 4 basic types of tissue
how many body systems do humans have?
11
what is a group of cells
tissue
describe epithelial tissue
they cover and line the surfaces of the body
Cells close together with minimal intercellular (in between cells) substance
there is no nerves or blood tissue directly inside- they tend to be in the connective tissue beneath epithelial tissue
what do glial cells do?
support nervous tissue
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