Chapter 5

Question 1

Located on the more mobile portion of the bone. Where the bone terminates. Proximal

Answer 1

Insertion

Question 2

The more stationary portion of the bone. Attached to where the bone begins. Distal end

Answer 2

Origin

Question 3

The origin moves towards the insertion. The proximal bone which is more stable, becomes more movable.

Answer 3

Reversal of muscle action

Question 4

Fibers that tend to be longer and have a greater range of motion

Answer 4

Parallel muscles

Question 5

Muscles that are long with thin fibers running the entire length of the muscle. “ think belt”. Ex- sternocleidomastoid

Answer 5

Strap muscle

Question 6

Spindle shaped muscle, thicker in the middle and tapered at the ends. Ex- biceps brachii

Answer 6

Fusiform muscles

Question 7

Muscle that is four- sided, usually flat with broad attachments at each end. Ex- rhomboid major and minor

Answer 7

Rhomboidal/ rectangular

Question 8

Flat and fan-shaped with fibers radiating from narrow attachment at one end to a broad attachment at the other. Ex- pectoralis major

Answer 8

Triangular

Question 9

Fibers that tend to be shorter but are more numerous per given area then parallel fibers

Answer 9

Oblique muscles

Question 10

This muscle looks like a one side of a feather. Series of short fibers attaching diagonally along length of central tendon. Ex- semi membranous

Answer 10

Unipennate muscle

Question 11

Pattern that looks like a common feather. It’s fibers are obliquely attached to both sides of a central tendon. Ex- rectus femoris

Answer 11

Bipennate muscle

Question 12

Has many tendons with oblique fibers in between. Ex- combo of 3 deltoids

Answer 12

Multipennate

Question 13

The length of the muscle when it is unstimulated, no forced or stresses are placed on it

Answer 13

Normal resting length

Question 14

The ability to respond to a stimulus

Answer 14

Irritability

Question 15

The muscles ability to shorten or contract when it received adequate stimulation.

Answer 15

Contractility

Question 16

The muscles ability to stretch or lengthen when a force is applied. This is a different kind of tension that is present than contraction

Answer 16

Extensibility

Question 17

The muscles ability to recoil or return to normal resting length after being lengthened. ( or shortened)

Answer 17

Elasticity

Question 18

Force that is built up within a muscle

Answer 18

Tension

Question 19

Slight tension that is present in a muscle at all times, even when the muscle is resting.

Answer 19

Tone

Question 20

Distance of the muscle from maximum elongation to maximum shortening.

Answer 20

Excursion