Musculoskeletal Phys

Question 1

Contraction of muscles permits…
1) purposeful _________ movement
2) manipulation of ______ ____
3) propulsion of contents through _____ _______ organs
4) emptying contents into ______ environment
5) production of ____
production of ______

Answer 1

locomotory
external objects
hollow internal
external
heat
sound

Question 2

What is the key function of muscles?

Answer 2

controlled force generation

Question 3

Contraction of muscle ______ calcium, and relaxation _______ calcium

Answer 3

releases
intakes

Question 4

Fine movement of muscles is caused by…

Answer 4

having 1 nerve per muscle cell

Question 5

________ of muscle is more important than ________ of muscle

Answer 5

relaxation
contraction

Question 6

Force is generated through _____/________ binding

Answer 6

actin
myosin

Question 7

What are the 2 types of ATP synthesis?

Answer 7

anaerobic
aerobic

Question 8

Basic muscle physiology is turning chemical energy into mechanical energy via…

Answer 8

carbon bonds

Question 9

What is the term for the ability to convert chemical energy to mechanical quickly, in large quantities, and in a sustainable fashion

Answer 9

athleticism

Question 10

What are the 3 types of muscles?

Answer 10

skeletal
cardiac
smooth

Question 11

Which muscle type is large, elongated, cylindrical, and causes movement?

Answer 11

skeletal

Question 12

Which muscle is formed by many myoblasts that lie parallel to each other and extend the full length of the muscle?

Answer 12

skeletal

Question 13

Mature contractile cells are _______ and injury will cause cell death

Answer 13

terminal

Question 14

What is the organization of skeletal muscle (smallest to largest, 5 parts)?

Answer 14

1) myosin/actin
2) thick/thing filament
3) myofibril
4) muscle fiber
5) whole muscle

Question 15

What is the term for specialized contractile elements that make up the majority of the muscle volume?

Answer 15

myofibrils

Question 16

The greater the density of myofibrils, the greater the _____

Answer 16

force

Question 17

Low percentage of myofibrils leads to a muscle that cannot generate much ______ but can contract at high _______

Answer 17

tension
frequency

Question 18

Thin filament is surrounded by _____ thick filaments

Answer 18

3

Question 18

Thick filament is surrounded by _____ thin filaments

Answer 18

six