Skeletal system- YMCA Level 2

Which are the main functions of the skeleton?

• Storage of minerals

• Protection

• Movement

• Framework

• Production

Answer explanation

Framework- To provide a bony framework for the body and to give it shape

Production - Not all bones are solid.

Blood vessels feed the centre of your bones,

Stored within them is bone marrow.

Production - Marrow in your long bones i.e humerous & femur  is continually producing red & white blood cells.Vital function as red blood cells die every minute.

Storage- Bone is a reservoir  for minerals i.e calcium, phosphorus and magnesium, essential for bone health & growth.These minerals are stored & released into bloodstream upon demand.This facilitates the balance of minerals in the body.

Protection - To support & protect vital organs, i.e:

-skull protects brain,thorax protects heart & lungs

-vertebral column protects  spinal cord

pelvis protects abdominal & reproductive organs

Movement- Provides attachment for skeletal muscles which permits movement,i.e

-Tendons attach muscles to bones, Tendons pulling on bones act as levers to create movement at our joints to walk, jump, throw etc…

Framework-To provide a bony framework for the body and to give it shape

How many bones are in the adult skeleton

• 300

• 206

• 236

• 125

Answer explanation

There are 206 bones in the human skeleton, not including teeth and sesamoid bones (small bones found within cartilage):

• 80 axial bones. This includes the head, facial, hyoid, auditory, trunk, ribs, and sternum.

• 126 appendicular bones. This includes arms, shoulders, wrists, hands, legs, hips, ankles, and feet.

What organs does the rib cage protect?

• heart

• liver

• lungs

• appendix

Answer explanation

The hard nature of bone means that the skeleton
can protect the more delicate parts of the body.

Which of the minerals below are stored in bone?

• Magnesium

• Potassium

• Calcium

• Phosphorus

Answer explanation

The skeleton stores minerals; for example, 99% of the calcium stored in the body is stored in the skeleton and 85% of the phosphorus. While those are two of the major minerals stored in the body, there are also others stored in smaller amounts such as Potassium, Iron, Sodium, Chlorine, Sulfur, Magnesium and Fluoride.

What is the name of the skeleton that contains the skull, ribs ,spine and sternum

• aperpendicular

• axial

What is another name for the skull?

• Pelvis

• Cranium

• girdle

• sternum

How many sections in the vertebral column

• 5

• 6

• 3

• 4

Answer explanation

How many vertebrae in the vertebral column?

• 24

• 12

• 33

• 5

Identify 2 bones in the lower limbs

• pectoral girdle

• Femur

• Tarsal

• Ulna

Answer explanation

Which are types of bones

• long

• square

• Oval

• irregular

Answer explanation