Muscle And Skeletal System

Front 1

Skeletal muscle function

Back 1

*structures and body
*acts as support
*Bone stores calcium when calcium is low the parathyroid hormones will break down skeletal tissues to release calcium.
*it protects soft organs in the body.

Front 2

Joints

Back 2

*where bone meets bone
*can be mobilized or non mobilized.

Front 3

Mobilized vs non mobilized bones

Back 3

*mobilized bones: have fluid-containing cavity that facilitates bone movements.
*non mobilized: no bone movements. bone to bone are connected with cartilages or fiber.

Front 4

Fascia

Back 4

*covering of skeletal muscles
*becomes tendons.

Front 5

Myofibrils

Back 5

*muscle fiber
*cause contraction
*myosin (thick filament)and actin (thin filament).

Front 6

Peristalsis

Back 6

*movement of food through the smooth muscle
* like milking a cow.

Front 7

Endoskeleton vs Exoskeleton

Back 7

Endoskeleton: having skeletal system inside like human
Exoskeleton: having the skeletal system outside the body like insects

Front 8

Cartilage

Back 8

*chondrocytes
*cells and extracellular matrix

Front 9

Extracellular matrix

Back 9

*contains fibers and meshwork that gives the cartilage its characteristic property (flexibility and resilience).

Front 10

Function of cartilage

Back 10

*flexibility:ear,nose, epiglottis, and end of ribs
*resilience:end of bones

Front 11

Ligaments vs tendons

Back 11

Ligaments connects bone to bone
Tendons connect muscle to bone

Front 12

Bone structure

Back 12

*Bone consist of compact bone of the outside and spongy bone on the inside
*bone may resemble cartilage but the collagen fibers in bone are harden due to calcium phosphates.

Front 13

Compact bone

Back 13

*strong dense and provide cite for muscle attachment.

Front 14

Spongy bone

Back 14

*light weight, rich in blood vessels,very porous and contains bone marrow.

Front 15

Three types of bone cells

Back 15

*osteoblasts : bone forming cells
*osteocytes: mature bone cells
*osteoclast: bone dissolving cells.

Front 16

Macroscopically vs Microscopically

Back 16

*solid structures with canals running inside where blood vessels run and holes where cells reside and the hole thing is surrounded by membranes that contain osteoblasts and osteocytes.
Microscopically:cell and extracellular matrix.
*they are arranged in cylinders called osteons.

Front 17

Osteoblast vs osteoclast

Back 17

*osteoblast add bone tissues to bone ends and outsides of bones
*Osteoclast is to remove some of the bone tissue until it's the right size and shape.
with out osteoclast bones will be too big and heavy.