Skeletal System 8 Spongy Bone + Bone Marrow Flashcards

1
Q

Define Tribecular Bone/Spongy Bone:

A

Loosly organized osteous tissue

Cells + bone matrix form a Trabecylae - thin spikes of bone that form an open network

Location: Metaphysis + Epithysis

Contains: Osteocytes + bone matrix arranged in lamellae layers

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2
Q

Function of Spongy Bone:

A

Provide strength w/out additional weight

Store bone marrow

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3
Q

Define Bone Marrow:

A

Tissue that occupies the medullary Cavities

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4
Q

The 2 kinds of Bone Marrow:

A

Red Bone Marrow + Yellow Bone Marrow

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5
Q

Define Red Bone Marrow:

A

Cells: Blood stem cells
Function: Produce white + red blood cells

In infants red bone marrow is in all bones
in adults most of it turns into yellow bone marrow

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6
Q

In adults Red Bone Marrow is only found where:

A

Skull

Vertebrae

Ribs

Sternum

Hips

Proximal Apithysis Humerus Femur

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7
Q

Define Yellow Bone Marrow:

A

Cells: Adipocytes (fat cells)

Function: Stores lipids

Location: In adults, all medullary cavities of extremities

Except proximal ends of humerus + femur

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