Quiz 3?

Question 1

Is crimp flexible

Answer 1

Yes , allows tendons to stretch and recoil efficiently, contributing to the elasticity and resilience of the muscle-tendon unit during movement.

Question 2

What does all or nothing rule say

Answer 2

Every fiber needs to be activated

Question 3

What is force determined by

Answer 3

Muscle fibers

Question 4

Mf seated on the chair at gym show

Answer 4

Passive insufficiency

Question 5

What do parallel fibers do

Answer 5

Give u greater range of motion ex are sartorius biceps brachii , good control , more speed but low force

Question 6

Pennate fibers

Answer 6

Larger number of muscle fibers , On an angle \/ like this but strong , compact provide bad rom /speed

Question 7

Muscle temp

Answer 7

Warm muscle leads to elastic muscle

Question 8

Warm muscle

Answer 8

Decreases friction due to sliding filament theory

Question 9

Series elastic component

Answer 9

Stores energy but lets it go when force is released

Question 10

Parallel elastic components

Answer 10

passive structures within muscles that run parallel to muscle fibers, contributes to the elasticity and stiffness of muscles, helping to maintain muscle integrity and shape during contraction and stretching.

Question 11

Proportional length of muscle

Answer 11

Creates greater force when at resting length /isolated conditions

Question 12

Active insufficiency and myosin

Answer 12

Myosin and actin can’t line up

Question 13

What’s inertia

Answer 13

objects like to keep doing what they’re already doing – staying still or moving – unless something pushes or pulls them to change.

Question 14

increase the surface area over which a force is applied, the pressure decreases. Conversely, when you decrease the surface area, the pressure increases, assuming the force remains constant.

Question 15

Location difference between sec and pec

Answer 15

Series elastic is in tendon and parallel is in muscles

Question 16

Force -velocity relationship

Answer 16

As speed of contraction increases, force production decreases and vice versa

Question 17

Why do we use inertia to stretch

Answer 17

property that makes objects resist changes in their motion or shape. So when we stretch something, For instance, when you perform a stretching exercise, such as a forward lunge, the initial movement stretches the muscle fibers. However, due to inertia, the muscle resists this change in length, contributing to the stretching sensation. This resistance helps to gradually increase flexibility and range of motion over time.

Question 18

Relationship of eccentric with load and velocity

Answer 18

High load low velocity

Question 19

Concentric , load and velocity

Answer 19

Low load high velocity

Question 20

Why is greatest forced produced when slightly stretch

Answer 20

SEC releases its stored energy and PEC maintains muscle structure

Question 21

Dislocation is at angle ?

Answer 21

0

Question 22

Rotary is at angle

Answer 22

90

Question 23

Stabilizing is at angle

Answer 23

180

Question 24

Active tension

Answer 24

Force generated by muscle contraction , makes muscle shorten and produce movement ,

Question 25

Passive tension

Answer 25

Force exerted on muscles when stretched , comes from elasticity , maintains shape and resist stretch : dnt evolve muscle contraction

Question 26

Baseball pitch

Answer 26

Active tension allows pitcher to accelerate arm generate power ; passive tension contributes by relseasing stores energy to produce speed n power of pitch

Question 27

What is the one thing that affects ROM

Answer 27

Muscle

Question 28

What does articular cartilage act like

Answer 28

Shock absorption

Question 29

Articular cartilage consist of

Answer 29

60-80% water , reduces friction , smooth surface facilities articulation

Question 30

Músculo tendinoso unit

Answer 30

Responsible for converting chemical energy stored in atp into mechanical work

Question 31

Contractile or internal forces

Answer 31

Active contraction of muscle fibers within muscle ; activate motor units within muscle by motor neurons ; generate movement posture and stabilize joints

Question 32

Non contractile force

Answer 32

Muscle and joint function but dnt involve active muscle contraction ;

Question 33

High load low velocity is eccentric contraction

Question 34

Low load high velocity is concentric