Exam 3: Histology

Question 1

How is Type I collagen made?

Answer 1

• 2 alpha 1 chains

- 1 alpha 2 chain

Question 2

Locations of Type I collagen:

Answer 2

• Dermis
• Bone
• Ligaments
• Tendons
• Fascia
• Fibrous cartilage
• Meniscus

Question 3

How is Type II collagen made?

Answer 3

-3 identical alpha 1 chains

Question 4

Locations of Type II collagen:

Answer 4

-Hyaline and elastic cartilage

Question 5

What does Type I, II, III collagens form?

Answer 5

• Fibrils

- Make up CT and cartilage

Question 6

What cells make up Type I cartilage?

Answer 6

• Fibroblasts (tendon, ligament)

- Osteoblasts (bone)

Question 7

What cells make up Type II cartilage?

Answer 7

-Chondroblasts (cartilage)

Question 8

Examples of long bones:

Answer 8

• Metacarpals
• Femur
• Tibia
• Humerus

Question 9

Parts of long bone:

Answer 9

• Diaphysis: shaft
• Epiphysis: ends
• Covered with hyaline cartilage

Question 10

Main function of long bones:

Answer 10

-Lever systems for movement

Question 11

Examples of long bones:

Answer 11

• Carpals

- Tarsals

Question 12

Examples of flat bones:

Answer 12

• Ribs
• Scapula
• Ala of ileum
• Bones of skull

Question 13

Function of flat bones:

Answer 13

• Muscle attachment

- Protection

Question 14

Examples of Irregular bones:

Answer 14

• Verebrae

- Ossicles of ear

Question 15

Function of irregular bones:

Answer 15

-Vertebrae: Protection of SC and structure to body

Question 16

Examples of Sesamoid bones:

Answer 16

• Patella

- Pisiform

Question 17

Function of Sesamoid bones:

Answer 17

• Improve moment arms of joints

- Weight bearing to some extent