Muscle Tissue

Question 1

What are the three types of muscle?

Answer 1

Skeletal
Smooth
Cardiac

Question 2

How do muscle fibers produce contraction?

Answer 2

Actin (thin) and myosin (thick) interact
Ca2+ MUST BE PRESENT

Question 3

Which of the muscle type(s) has striated muscle (has stripes)?

Answer 3

Skeletal and cardiac

Question 4

Which of the muscle type(s) has nonstriated muscle?

Answer 4

Smooth muscle

Question 5

Muscles are surrounded by which tissue?

Answer 5

Connective tissue

Question 6

What is the organization of muscle components starting with bone and ending with myofibrils?

Answer 6

Bone->tendon (CT)->muscle->fasicle->myocyte->myofibrils

Question 7

What theory states that z lines move closer together as myofilaments slide past each other?

Answer 7

Sliding filament theory

Question 8

What happens to the length of myofilaments as they slide past each other?

Answer 8

NOTHING

Question 9

Smooth muscle has the (slowest/fastest) contractions.

Answer 9

Slowest

Question 10

Which muscle type can you NOT think about and make work?

Answer 10

Smooth muscle

Question 11

Which muscle type contains NO t-tubules?

Answer 11

Smooth muscle

Question 12

Smooth muscle contains what type of nuclei that helps the cell twist as it contracts?

Answer 12

Corkscrew nuclei

Question 13

Sarcolemma is the same as the _______membrane

Answer 13

Plasma membrane

Question 14

Sarcoplasm is the same as __________ (for muscles only)

Answer 14

Cytoplasm

Question 15

T-tubules are an extension of what?

Answer 15

Sarcolemma
(Plasma membrane)

Question 16

What occurs in the invaginations of the sarcolemma?

Answer 16

Depolarization->voltage sensor proteins->sarcoplasmic reticulum gates and release Ca2+

Question 17

Lack of ATP prevents disassociation of actin and myosin which leads to what post death phenomenon?

Answer 17

Rigor mortis