Unit 1 Life cycle of the skeletal system Flashcards

1
Q

what is the shape of an individuals skeleton determined by?

A

Genes and environmental factors

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2
Q

What are the two factors

A

Mechanical and metabolic factors

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3
Q

what do mechanical factors (1) do and what do metabolic factors (2) do

A
  1. Muscles forces acting on the developing bone

2. Supply nutrients to the skeleton

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4
Q

In a full developed skeleton what do bones contain?

A

living and non living tissue

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5
Q

What are the living tissues?

A

Blood vessels
nerves
collagen
bone cells

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6
Q

What do all of those living tissues contain? (3 things)

A

Osteoblasts
Osteoclasts
Osteocytes

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7
Q

What are Osteoblasts?

A

Cells that deposit calcium to help form bone

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8
Q

What do Osteoclasts do?

A

Cells that help to eat away old bone

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9
Q

What do Osteocytes do?

A

Mature osteoblasts that have ended their bone forming role

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10
Q

How does nutrition affect bone formation?

A

Some food can inhibit the absorption of calcium

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11
Q

How does Sunlight affect Bone formation

A

It actually helps it because when in the sun the skin can produce vitamin D

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12
Q

What is Vitamin D important for?

A

The proper absorption of calcium in the small intestine

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13
Q

How does Hormonal Secretions affect bone formations?

A

Its responsible for the general development of bones

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14
Q

What are hormones produced by?

A

The Endocrine system

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15
Q

What does the pituitary gland produce?

A

Growth Hormones

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