Skeletal Framework

Question 1

What type of skeleton typically consists of numerous bones?

Answer 1

Endoskeleton

Question 2

What type of skeleton is compromised of connected segments?

Answer 2

exoskeleton

Question 3

What do parts of the skeleton work as?

Answer 3

Lever = the bones
Fulcrum = the joint
Effort = the muscles that pull on the bone
Load = the mass being moved (usually just the body’s mass)

Question 4

What are the 3 types of skeletons?

Answer 4

Endoskeleton, exoskeleton, hydrostatic skeleton

Question 5

What is a type of first class lever?

Answer 5

Contractions of the muscle in the neck pull (effort) on the skull (fulcrum), causing it to pivot. The face (load) rises.

Question 6

What is a type of 2nd class lever?

Answer 6

Calf muscle (effort) contracts causing the foot (load) to rise, pivoting off the ball off the foot (fulcrum).

Question 7

What is a type of 3rd class lever?

Answer 7

When lifting an object (load), the elbow joint is the fulcrum across which the biceps muscle (effort) performs the work.