Muscle

Question 1

Does all muscle need calcium??

Answer 1

Yes.

Question 2

Is skeletal muscle tissue multinucleated??

Answer 2

Yes

Question 3

Is cardiac muscle tissue multinucleated??

Answer 3

No

Question 4

What is the function of Dystrophin??

Answer 4

Dystrophin holds thin filaments in place. If dystrophin isn’t produced, then sarcomeres break down and leads to muscular dystrophy.

Question 5

What is the functional unit of the myofibril??

Answer 5

Sarcomere

Question 6

What are the two types of muscle tissue??

Answer 6

Striated and Smooth

Question 7

Do all muscle tissues share contractile abilities due to the arrangement of thick and thin myofilaments??

Answer 7

Yes

Question 8

What does the endomysium surround??

Answer 8

Muscle Fibers

Question 9

What does the perimysium surround??

Answer 9

Muscle Fascicles

Question 10

What does the epimysium surround??

Answer 10

Entire Muscle

Question 11

Why are type 1 muscles red??

Answer 11

High capillary density and concentration of myoglobin

Question 12

Why are type 2 muscles white??

Answer 12

Low capillary density and concentration of myoglobin

Question 13

What are the three bands of a sarcomere??

Answer 13

1. I band
2. A band
3. H band

Question 14

What is the I band of a sarcomere??

Answer 14

Ends of the sarcomere that connects to adjacent sarcomeres at the z disc.

Question 15

What is the A band of a sarcomere??

Answer 15

Area of the sarcomere that contains both thick and thin filaments.

Question 16

What is the H band of a sarcomere??

Answer 16

Area of the sarcomere that contains on thick filaments.

Question 17

What is the M line of a sarcomere??

Answer 17

The middle of a sarcomere.

Question 18

What is the neuromuscular junction??

Answer 18

Place where muscle contraction is initiated.

Question 19

How do you tell cardiac muscle from skeletal muscle??

Answer 19

Look for the intercalated discs in cardiac muscle. Looks like man hole covers.