Levels of structural organisation of the body Flashcards

1
Q

Chemical level - what 3 atoms do they make?
what 3 combinations do these make?
These molecules combine to form what?

A

the body is made up of building blocks called atoms e.g. Carbon, hydrogen and oxygen - essential for maintaining life - e.g. by combining to form molecules like fats, proteins and carbohydrates - these molecules combine to form cells

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2
Q

cellular level -
what do they combine to form?

A

cells are the basic structural and functional unit of the body. They all have specific functions e.g. nerve/blood cells - they combine to form tissues

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3
Q

Tissue level

A

Groups of cells and materials. There are 4 tissue types which preform particular functions. Called epithelial. Muscular connectives and nervous tissues - two or more different types combine to form organs

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4
Q

Organ level

A

Have a very specific function and recognizable shapes. e.g. heart, liver, stomach, lungs - a group of them combine to form systems

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5
Q

organismic level

A

Is a living person

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6
Q

system level

A

composed of related organs performing a particular function. e.g. digestive system has organs e.g. stomach, liber, pancreas, small and large intestine. - its function = break down and digest food

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7
Q

Dense connective (fibrous) tissue definition

A

contains thick, densely packed fibres and fewer cells than loose connective tissue. It forms strong structure and there are different types of it

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8
Q

Elastic connective tissue (yellow elastic tissue)
Description:
Location:
Function:

A

Description: has many freely branching elastic fibres; few cells and little matrix; elastic fibres five the tissue a yellowish colour
Location: lung, arteries walls, trachea, bronchial tubes
Function: elasticity for stretching and strength

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9
Q

Dense regular connective tissue (white fibrous tissue)
Description:
Location:
Function:

A

Description: has mainly collagen fibres arranged in parallel bundles with cells in between the bundles; the matrix is a shiny white colour
Location: Tendons, ligaments, aponeuroses
Function: attachment

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10
Q

Bone (osseous tissue) definition

A

Bone is an exceptionally hard connective tissue that protects and supports other organs in the body.

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11
Q

Where do the bone cells sit?

A

in the lacunae (cavities) surrounded by layers of a very hard matrix - this has been strengthened by the inorganic salts e.g. calcium and phosphate - includes compact and cancellous bone

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