The Musculoskeletal System

Question 1

How many bones are there is the human body?

Answer 1

206 bones

Question 2

List the six (6) types of bones

Answer 2

• Long Bones – designed to provide leverage (femer, ulna)
• Short bones – designed for weight bearing (wrists, ankles)
• Flat Bones – protection (cranial, sternum, ribs)
• Irregular bones – complicated shapes (vertebrae)
• Sesamoid bones – develop in some tendons (vary from person to person)
• Sutural Bones – small bones within joints

Question 3

What is the relationship between Bandha and joint stability?

Answer 3

The physical act of a Bandha is to actively contract opposing muscles, creating a physical lock that protect and support our joints.

Question 4

What are the three (3) classifications of joints?

Answer 4

Fibrous joint – in plates in skull, tiny bit of movement but incredibly strong

Cartilaginous joints – strong but pliable (strong but flexible) Rib cage, collar bone, some in pelvis

Synovial joint - complex

Question 5

List the six (6) types of synovial joints

Answer 5

• Ball & Socket Joints
• Condyloid Joints (or ellipsoidal joints)
• Gliding joints (or planar joints)
• Hinge Joints
• Pivot Joints
• Saddle Joints

Question 6

Ball & Socket Joints

Example and description?

Answer 6

Shoulder and Hip joints.

These allow a wide range of movement.

Question 7

Condyloid Joints (or ellipsoidal joints)

Example and description?

Answer 7

The wrist

A condyloid joint is where two bones fit together with an odd shape

Question 8

Hinge Joints

Example and description?

Answer 8

The elbow

These joints act like a door hinge, allowing flexion and extension in just one plane.

Question 9

Gliding joints (or planar joints)

Example and description?

Answer 9

The carpals of the wrist

These joints allow a wide variety of movement, but not much distance.

Question 10

Pivot Joints

Answer 10

The elbow (between the radius and the ulna)

This is where one bone rotates around another.

Question 11

Saddle Joints

Example and description?

Answer 11

The thumb (between the metacarpal and carpal)

permit the same movements as the condyloid joints.

Question 12

What are the three (3) components that form a joint

Answer 12

• Cartlidge
• Ligaments
• Tendons

Question 13

What is a ligament?

Answer 13

• They join bones to bone
• They hold joints in place
• Keep joint flexible but strong

Question 14

What is a tendon?

Answer 14

• Connect muscles to bone
• More flexible than ligaments
• There is a store house of energy in the tendon.