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Questions and Answers

Skeletal system is made up of

Bone, Cartilage, ligaments & tendon

Microscopic unit of a compact bone

Osteon

Skeletal system contains how many bone

206

Cartiage is

<p>Avascular and has no nerve endings</p> Signup and view all the answers

Cartilage is mostly made up of

<p>Water which makes it serve has a shock absorber</p> Signup and view all the answers

Because the cartilage is Avascular it is surrounded by

<p>Perichondrium ( provides nutrient)</p> Signup and view all the answers

3 types of Cartilage are

<p>Hyaline, Elastic&amp; Fibrocartilage</p> Signup and view all the answers

All 3 types of Cartilage have

<p>chrondycytes(cells responsible for cartilage formation) and extracellular matrix</p> Signup and view all the answers

Hyaline cartilage provides

<p>Support, flexibility &amp; resilience</p> Signup and view all the answers

Hyaline Cartilage is

<p>more abundant</p> Signup and view all the answers

Types of hyaline cartilage

<p>articular, respiratory, nasal &amp; costal</p> Signup and view all the answers

What kind of fiber does Hyalin cartilage have

<p>Collagen fibers</p> Signup and view all the answers

Elastic Cartilage have what fiber

<p>Elastic fiber</p> Signup and view all the answers

Elastic cartilage are found

<p>In external ear and epiglottis</p> Signup and view all the answers

Fibrocartilage are

<p>highly compressible</p> Signup and view all the answers

Fibrocartilage are found in

<p>Knee and vertebral disc</p> Signup and view all the answers

Appositional growth is

<p>During late adolescence and throughout adulthood</p> Signup and view all the answers

Interstitial growth

<p>During childhood &amp; early adolescence</p> Signup and view all the answers

Bone functions

<p>Plays importantant role in homeostasis</p> Signup and view all the answers

Function of bone

<p>Store calcium and phosphate</p> Signup and view all the answers

Function of bone

<p>blood cell formation(hematopoisis) in the red marrow</p> Signup and view all the answers

Function of bone

<p>Stores fat for energy in yellow marrow</p> Signup and view all the answers

Function of bone

<p>Hornmone production eg osteocalcin which helps to regulate insulin secretion</p> Signup and view all the answers

Bone is classified by

<p>Region and Shape</p> Signup and view all the answers

2 region classification of bone

<p>Axial &amp; Appendicular</p> Signup and view all the answers

Shape bone classification

<p>long, flat, short &amp; irregular</p> Signup and view all the answers

Long bone

<p>Thigh, leg,arm &amp; forearm</p> Signup and view all the answers

Shaft of long bone

<p>Diaphysis</p> Signup and view all the answers

2 bulky end of long bone

<p>Epiphysis</p> Signup and view all the answers

Long bone is because

<p>of their shape and not their size</p> Signup and view all the answers

Short bones are in

<p>Wrist and ankle</p> Signup and view all the answers

Special kind of short bone is

<p>Sesamoid bone(formed in the tendon)</p> Signup and view all the answers

Flat bone

<p>skull,scapula, ribs</p> Signup and view all the answers

The reminant of epiphyseal line is at

<p>Epiphyseal plate</p> Signup and view all the answers

The reminant of childhood bone growth is

<p>Epiphyseal line</p> Signup and view all the answers

Irregular bone

<p>hip bone, facial,vertebrae</p> Signup and view all the answers

Compact bone is

<p>Dense , smooth and outside</p> Signup and view all the answers

Spongy bone is

<p>less dense, light, inside</p> Signup and view all the answers

What is essential for bone cell survival and bone formation

<p>Periosteum</p> Signup and view all the answers

What contains osteogenic cells that helps to differentiate into other bone cells

<p>Endosteum</p> Signup and view all the answers

Hematopoiesis takes place in the

<p>Red marrow and yellow marrow</p> Signup and view all the answers

outward bulge of bone

<p>Projection</p> Signup and view all the answers

Passageways for vessels and nerves

<p>Depression &amp; opening</p> Signup and view all the answers

Bone forming celss that secretes bone matrix or osteoid is

<p>Osteoblast</p> Signup and view all the answers

Osteoblast is

<p>Actively mitotic</p> Signup and view all the answers

what cell monitor and maintain the bone

<p>Osteocytes</p> Signup and view all the answers

What bone cell is responsible for bone resorption

<p>Osteoclast</p> Signup and view all the answers

The process of bone formation is

<p>Ossification / osteogenesis</p> Signup and view all the answers

Bone formation begins

<p>2nd month of fetal development</p> Signup and view all the answers

Bone formed from a cartilage is

<p>Endochondral ossification</p> Signup and view all the answers

Bone formed from fibrous membrane is

<p>Intramembraneous ossification</p> Signup and view all the answers

The primary ossification centre is

<p>Endochondral ossification</p> Signup and view all the answers

A ll bones below the skull except clavicle are formed byn

<p>Endochondral ossification</p> Signup and view all the answers

Cranial bones and clavicles are formed by

<p>Intramembranous ossification</p> Signup and view all the answers

Increase in bone length

<p>Interstitial growth</p> Signup and view all the answers

Increase in bone thickness

<p>Appositional growth</p> Signup and view all the answers

During bone remodelling what happens to calcium

<p>Calcium is moved into and out of blood</p> Signup and view all the answers

during bone formation

<p>calcium is remove from blood</p> Signup and view all the answers

during bone breakdown

<p>calcium is release into the blood to increase circulation</p> Signup and view all the answers

parathyroid hormone

<p>Stimulated release of bone into blood</p> Signup and view all the answers

calcitonin

<p>Removes calcium from the blood</p> Signup and view all the answers

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