P. 3

Question 1

What is locomotor system consist of?

Answer 1

Skeleton
Joints
Muscle

Question 2

Cartilage:

Answer 2

• Softer than bone and slightly elastic
• forms the temporary skeleton of the developing fetus
• composed of modified C.T. In which the cells and fibrous embedded in gel-like matrix
• blood vessels and nerves are ABSENT
• nutrients diffuse via the matrix from blood vessels into the surrounding tissue
• it is covered by a fibrous membrane (perichondrium)

Question 3

What are the 3 types of cartilage?

Answer 3

• Hyaline cartilage
• Elastic cartilage
• Fibrocartilage

Question 4

Hyaline cartilage:

Answer 4

• has a high proportion of amorphous matrix
• it covers the articular surface of synovial joints
• plays a role in growth in length of long bone epiphyseal plate
• the skeleton of a fetus is made largely of hyaline cartilage

Question 5

Elastic cartilage:

Answer 5

• composed of a large amount of elastic fibers
• very flexible
• repairs itself with fibrous tissue when damaged

Question 6

Fibrocartilage:

Answer 6

Has many collagen fibers embedded in a small amount of matrix

Question 7

Where is Elastic cartilage found?

Answer 7

Auricle of the ear
External acoustic (auditory) meatus
Auditory tube
Epiglottis

Question 8

Where could Fibrocartilage be found?

Answer 8

In the discs within vertebral joints
Temporal-mandibular joints
Articular surface of the clavicle bone
Manubrium of sternum