Ch 10

Question 1

Three types of muscle tissue

Answer 1

Skeletal, cardiac, smooth

Question 2

Three types of muscle tissue

Answer 2

Skeletal, cardiac, smooth

Question 3

Purpose of skeletal muscle

Answer 3

Converting the chemical energy in ATP into mechanical energy of motion

Question 4

What does Myo mean

Answer 4

Muscle

Question 5

What are sphincters

Answer 5

Control the opening pathways

Question 6

Glycemic control

Answer 6

Muscles absorb and store glucose which helps regulate blood sugar within a normal range

Question 7

Striations

Answer 7

Lots of small stripes. Results from the arrangement of internal contractile proteins

Question 8

Can muscle cells divide?

Answer 8

No, too many nucleus’s

Question 9

Sarcolemma

Answer 9

Plasma membrane

Question 10

Projections around sarcolemma

Answer 10

Transverse(T) tubules. Allows for an action potential

Question 11

Myofibrils

Answer 11

Bundles of myofilaments. Pencils w a rubber band around it. Within the sarcoplasm

Question 12

What things are inside the sarcoplasm

Answer 12

Myofibrils, glycogen, myoglobin(store protein in muscle for oxygen)

Question 13

Sarcoplasmic reticulum

Answer 13

Verizion of smooth ER. Stores calcium. Calcium is released when there is an action potential. Takes it up once we’ve done contracting our muscles

Question 14

What are terminal cisternae

Answer 14

Dilated end sacs of the SR

Question 15

Myosin

Answer 15

Thick filaments of myofilaments.

Question 16

Actin

Answer 16

Thin filaments of myofilaments. Two intertwine to form fibrous actin. If individual subunit, globular actin.

Question 17

What do we use to regulate the sites on actin where myosin head wants to interact

Answer 17

Troponin and tropomyasin

Question 18

To make the active sites open, we need

Question 19

what type of muscle doesn’t have striations?

Answer 19

smooth

Question 20

which type of muscle has a butt ton of glycogen

Answer 20

cardiac. this way u don’t die

Question 21

which muscle type has intercalated discs

Answer 21

cardiac

Question 22

which muscle type is uninucleus

Answer 22

smooth

Question 23

myopathies

Answer 23

muscle disease

Question 24

muscular dystrophy

Answer 24

muscles degenerate and replaced w scar and adipose tissue. no dystrophin so when shortening cell it’s without the sarcolemma. Hereditary.

Question 25

Myasthenia gravis (MG)

Answer 25

Autoimmune diseas where the antibodies distroy the asytel coline(ACh) receptors. Shows in facial muscles. Eyelid droops. Trouble swallowing, limb weakness