Ch 11: Muscle tissue

Question 1

Functions of the muscular system

Answer 1

1. Movement
2. Stability
   3. Control of openings
3. Heat production
4. Glycemic control

Question 2

Facia

Answer 2

Sheet of connective tissue that separates one muscle from neighboring muscles

Question 3

Epimysium

Answer 3

Outermost fibrous Sheets surrounding entire muscle under fascia 

Question 4

Perimysium

Answer 4

Thicker part surrounding fascicles

Question 5

Endmysium

Answer 5

Fibrous tissue around each fiber

Question 6

Universal characteristics of muscle

Answer 6

Excitability
Conductivity
Contractility
Extensibility
Elasticity

Question 7

Types of muscle tissues

Answer 7

Skeletal muscles
Cardiac
Smooth

Question 8

Plasma membrane of muscle cell

Answer 8

Sarcolemma

Question 9

Cytoplasm of muscle cell

Answer 9

Sarcoplasm

Question 10

Myofibrils

Answer 10

Pertinacious cords made of smaller myofilaments

Question 11

Myoglobin

Answer 11

Read oxygen binding pigment; provides oxygen for muscular activity

Question 12

Muscle cells have lots of which cellular organelle

Answer 12

Mitochondria

Question 13

Muscle cells are multi nucleated or only have one nucleus?

Answer 13

Multinucleated 

Question 14

Muscle version of endoplasmic reticulum, and what it helps to do

Answer 14

Sarcoplasmic reticulum
Crucial for contractility and excited ability
Has calcium reservoir

Question 15

And part of the sarcoplasmic reticulum That forms triad with T tubules

Answer 15

Terminal cisterns

Question 16

Transverse T tubules

Answer 16

Electric lines; one muscle fiber to multiple muscle fibers

Question 17

Triad

Answer 17

Terminal cistern
Teaching your
Terminal cistern

Question 18

Myofilaments

Answer 18

 Filaments responsible for contraction; myosin and actin and elastic

Question 19

Thick filaments

Answer 19

Made of myosin; golf club heads interact with Acton to meet contraction

Question 20

Myosin ATPase

Answer 20

Enzyme that utilizes ATP to help with contraction

Question 21

Thin filament

Answer 21

Made up of protein actin
Whole structure of Acton= F actin, subunits = G actin

Question 22

Covering that covers active site so no spontaneous contraction

Answer 22

Tropomyosin

Question 23

Troponin

Answer 23

Where calcium binds and causes tropomyosin to fall off active site on actin

Question 24

Elastic filament : Made of and does what?

Answer 24

Protein titin
Attaches to Z band and thick filament to allow movement inward and outward

Question 25

Myofibrils

Answer 25

Arranged in cylindrical bundles that extend from one end of muscle to the other

Question 26

A bands

Answer 26

Dark
Thick Filomena’s side by side

Question 27

I band

Answer 27

Light
Region w no thick filaments

Question 28

H line

Answer 28

Lighter region in A band

Question 29

M line

Answer 29

Point to which thin filaments are linked together (middle of h band)

Question 30

sarcomere

Answer 30

Segment from one z disc to the next

Question 31

Hierarchy of skeletal muscle

Answer 31

Muscle
Fascicle
Muscle fiber
Myofibril
Sarcomere
Myofilaments

Question 32

Fascicle

Answer 32

Bundle of muscle fibers within muscle

Question 33

Muscle fiber

Answer 33

Single muscle cell enclosed in sarcolemma made of lots of myofibrils

Question 34

Myofibril

Answer 34

Made of proteinsceous filaments

Question 35

Sarcomere

Answer 35

Functional unit of Myofibrils

Question 36

Myofilaments

Answer 36

Individual filaments ( thick, thin, elastic)

Question 37

Cardiac muscle

Answer 37

Cells are myocytes

Question 38

Cardiac contractions are rhythmic because of what kind of cells?

Answer 38

Pacemaker cells; contract without stimulation or innervation

Question 39

Which muscle cells have under developed Sarco plasmic reticulum and larger T tubules to admit more calcium?

Answer 39

Cardiac muscle

Question 40

Which muscle cells lack striations, are slower, form layers in walls of hollow organs? SR is scanty and no T tubules

Answer 40

Smooth muscle