Midterm 1 Review

Question 1

Human Motion is caused by: (2)

Answer 1

Anatomy: muscles, body segments, joints
Mechanics: generate toque, accelerate levers about axes

Question 2

Inertia

Answer 2

“reluctance” to change

Question 3

Centre of Mass

Answer 3

the point around which the bodys mass is equally distributed

Question 4

Velocity

Answer 4

a body in a “constant state” of motion

Question 5

Acceleration

Answer 5

a change in “constant state” of motion

Question 6

Acceleration can be positive or negative: T of F

Answer 6

True

Question 7

Velocity can refer to the state of stillness: T or F

Answer 7

true

Question 8

A force applied to the balance point of a body will cause rotational movement: T or F

Answer 8

-false

Question 9

4 types of Motion

Answer 9

No motion, Linear motion, Rotational (angular), Motion to Stationary

Question 10

Rotational/ Angular

Answer 10

movement of the limbs is what causes linear movement of the body

Question 11

6 General Functions of Skeleton

Answer 11

Support, Protection, Locomotion, Blood Cell production, Mineral Reservoir, Mineral Trap

Question 12

Classification of Bones

Answer 12

Porosity: Cortical, trabecular
Shape: Short, Long, Irregular, Sesamoid, Flat

Question 13

Joint Movements

Answer 13

Closing joint angle: flexion
Opening joint angle: extension
Closing joint angle sideward: adduction
Opening joint angle sideward: abduction
Shoulders: Elevation, Depression, Abduction (protraction), Adduction (retraction)

Question 14

Appendicular Appendage Movements

Answer 14

Soleus: plantar flex
Hamstring: hip extension
Gluteals maximus: hip extend
Brachialis: elbow flex
Supraspinatus: abducts humerus
Lats: medial rotation humerus
Erector Spinae: trunk extension
Sternocleidomastoid: neck flexion
Iliopsoas (hip flexors)
Quads: rectus femoris, 3 vastus
Hamstrings(4): hip extension, knee flexion
Tibialis anterior: ankle dorsiflexion
Gastrocnemius: knee flexion, plantar flexion