B.1.1.1 Skeletal System

What does the skeletal system protect?

internal organs

What is mineral homeostasis

where bones store vital minerals

What are they used for?

muscle contraction and nerve activity

What does it store?

energy

Where are lipids (energy) stored?

inside yellow bone marrow

Where is yellow bone marrow located?

inside long bones

What are bones connected by?

ligaments

What is produced in red bone marrow?

red blood cells, white blood cells and platelets

Where is red bone marrow found?

in flat bones at the end of long bones

What is the skeletal system?

the structural framework for the body

vertebral column

cervical vertebrae

7

It is the

smallest

What does it have?

the greatest range of movement

thoracic vertebrae

12

What is it less?

mobile

What is attached to each side?

the ribs

what does this restrict?

movement

lumbar vertebrae

5

What is it?

the biggest and strongest

What does it have a major role in?

weight bearing

What does it absorb?

high compression loads

sacrum

transmits weight from the body to the pelvis and legs

What does the vertebral column support?

the head

what does the vertebral column enclose and protect?

the spinal chord

what does the vertebral column transmit weight from?

the body to the legs

What does the vertebral column provide an attachment point for?

the ribs and muscles of the back

axial skeleton

forms central framework for the body

what does the axial skeleton protect?

vital organs

skull protects the

brain

vertebral column protects the

spine

ribs protect the

heart and lungs

what does it provide?

structural support

what does the spine maintain?

upright posture

what does the axial skeleton bear the weight of?

the head, neck and trunk

what does the axial skeleton provide attachment for?

the muscles (1)

appendicular skeleton

consists of the limbs and girdles that attach to the axial skeleton

What does appendicular skeleton help move?

the limbs

what does the appendicular skeleton support the weight of?

the upper and lower limbs

what is the appendicular skeleton attachment point for?

muscles