Tissues in the Body

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Tissues in the Body
Unit 5 – Anatomy and Physiology for
Health and Social Care

Epithelial
Cuboidal – cube shaped, prominent

nucleus. Can be found in medulla of kidney.
Does not allow for passive diffusion easily.

Columnar – tall, vertical, thick cells. Can be

found in the small intestine. Does not allow
passive diffusion easily. Active transport is
needed. Move nutrients from intestine to
blood = absorption! Can have microvilli to
increase surface area.

Squamous – large, thin and prominent

nucleus. Like a sunny side up egg. Can be
found in glomerulus of kidney, walls of
capillaries, alveoli of lungs. Allows for
diffusion easily.

Ciliated – Tall cells with small finger-like

projections. Give a waving motion to move
mucus.
Connective tissue lies underneath most
epithelial tissues!

Connective
Blood – cells floating in pale yellow liquid.

Plasma mostly water with stuff dissolved in
(glucose, urea, plasma proteins etc.)
Red blood cells (Erythrocytes), biconcave
disc, no nucleus or mitochondria?.

White Blood Cells (Leucocytes)

Lymphocytes – some secrete antibodies,
some kill
infected cells and control aspects of
immunological process.
Monocytes – engulf bacteria.

Granulocyte – 3 types; neutrophil,

eosinophil, basophil, Some engulf bacteria,
others involved in allergies and
inflammation.

Platelets for clotting. Can be sticky.

Cartilage – cells in a strong, flexible protein.

Does not stretch but is flexible. Supports
softer tissues in nose, ear, trachea. Also
acts as shock absorbers in spine. Contains
elastin and collagen fibres.

Bone – formed from calcium salts deposited

around proteins. Calcium salts are rigid,
protein fibres provide elasticity and
strength

Areolar – contains cells called fibroblasts

separated by non-living matrix. Collagen
fibres for flexibility, elastic fibres for
stretching. Found in skin, most internal
organs (for expansion),...