Micro Muscle

Question 1

Responds to stimulus

Answer 1

Excitability/irritability

Question 2

Able to shorten forcibly

Answer 2

Contractility

Question 3

Able to be stretched

Answer 3

Extensibility

Question 4

After stretched returns to original length

Answer 4

Elasticity

Question 5

3 types of muscle tissue

Answer 5

1.skeletal 
Striated 
Voluntary 
2.smooth 
Non striated 
Involuntary 
3.cardiac 
striated
Involuntary

Question 6

2 kinds of myofilaments

Answer 6

Actin- thin

Myosin- thick

Question 7

Endomysium

Answer 7

Surrounds muscle fiber

Question 8

Fascicles

Answer 8

Several muscle fibers together

Question 9

Perimysium

Answer 9

Surrounds a fascicle

Question 10

Epimysium

Answer 10

Surrounds entire muscle

Question 11

Origin

Answer 11

Immovable/less movable bone

Question 12

Insertion

Answer 12

Movable bone

Question 13

Direct attachment

Answer 13

Epimysium fuses to periosteum

Question 14

Indirect attachment

Answer 14

More durable
Tendon
Aponeurosis- broad flat fibrous tissue

Question 15

5 muscle components

Answer 15

Multinucleated
Sarcoplasm- glycogen and myoglobin
Myofibril- long filamentous organelle, striations
Sarcoplasmic Reticulum- regulates intracellular Ca
T Tubules- protrudes deep into cell from sarcolemma conducts nerve impulses to myofibrils

Question 16

A band

Answer 16

Dark
Thick myosin
Portion of thin

Question 17

I band

Answer 17

Light
Portion of thin
Z line

Question 18

Sarcomere

Answer 18

Distance between two z lines

Question 19

Atp hydrolysis

Answer 19

Energy transferred to myosin head so repositioning occurs

Question 20

Functions

Answer 20

Movement
Maintain posture
Stabilize joints
Generate heat

Question 21

Neuromuscular junction

Answer 21

1. Electricity travels down axon
2. Vesicles release Acetylcholine
3. Ach diffuses across synapse
4. Ach binds to ach receptors on sarcolemma
5. Action potential generated and propagated
6. Acetylcholinesterase breaks down ach