Myology

Question 1

Myology Definition

Answer 1

Study of muscles

Question 2

Skeletal Muscle Composed Of

Answer 2

Made up of muscle fibers. Each skeletal muscle is an organ.

Question 3

Functions of Skeletal Muscle

Answer 3

Body Movement
Maintenance of Posture
Temperature Regulation
Storage and Movement of Materials
Support

Question 4

Tendons

Answer 4

Dense Regular CT
Aponeuroses
Connect muscles to bone

Question 5

Aponeuroses

Answer 5

Flattened, sheetlike tendons

Question 6

Muscle fiber wrapped around what?

Answer 6

Endomysium

Question 7

Fascicles

Answer 7

Groups of muscle fibers

Question 8

Fasicle surronded by?

Answer 8

Perimysium

Question 9

Muscle surronded by?

Answer 9

Epimysium

Question 10

What surrounds the CT Wrappings?

Answer 10

Deep Fascia

Question 11

Superficial Fascia Location

Answer 11

Superficial Fascia superficial to deep fascia

Question 12

Sacrolemma

Answer 12

Muscle cell membrane, surrounds the muscle cell

Question 13

Sacroplasm

Answer 13

Cytoplasm within the muscle cell

Question 14

Sacroplasmic Reticulum

Answer 14

It has cell organelles like lysosomes, ribosomes, and endoplasmic reticulum

Question 15

Sacroplasmic Reticulum Functions

Answer 15

Stores Calcium ions (Ca2+) and releases them when the muscle contracts

Question 16

Transverse Tubules (T-Tubules) Function

Answer 16

Conducts nerve impulse quickly from sacrolemma through muscle fiber

Question 17

Muscle fiber primarily composed of?

Answer 17

Myofibrils

Question 18

Myofibrils

Answer 18

Run the length of muscle, as long as muscle fiber

Question 19

Myofibril composed of?

Answer 19

Myofilaments

Question 20

Myofilaments

Answer 20

Need to run length of muscle. Protein filaments

Question 21

Thick Myofilaments name?

Answer 21

Myosin

Question 22

Thick Myofilament

Answer 22

Each thick myofilament surrounded by six thin myofilaments

Question 23

Thin Myofilaments name??

Answer 23

Actin

Question 24

Light Bands Name

Answer 24

I Bands

Question 25

I Band Components

Answer 25

Thin Myofilaments only Thin doesn't block light Shortens when contracted

Question 26

Dark Bands Name

Answer 26

A Bands

Question 27

A Bands Components

Answer 27

Thick and Thin Myofilaments Can block more light Doesn't shorten

Question 28

Dark structure in the middle of an I Band?

Answer 28

Z Disc

Question 29

Z Disc

Answer 29

Dark structure in the middle of an I Band Thin myofilaments attach Doesnt Shortens when contracted

Question 30

H Zone

Answer 30

Lighter, Central Region in the Middle of A Band | Shortens when contracted

Question 31

What kind of filaments are in H Zone

Answer 31

Thick Myofilaments

Question 32

M Line

Answer 32

Dark Line in middle of H Zone | Doesnt Shortens when contracted

Question 33

What kind of Filaments attach to M Line

Answer 33

Thick Myofilaments

Question 34

Sacromere

Answer 34

Runs from Z Disc to Z Disc Muscle will contract from one Z Dick to Another Many Sacromeres along length of muscle fiber Shortens when contracted

Question 35

Sliding Filament Model of Contraction

Answer 35

Thick and thin myofilaments slide over one another When muscles contract, they begin to overlap Sacromeres shorten, H Zones Narrow, I Bands Narrow

Question 36

Muscle Components from smallest subunits to the largest

Answer 36

``` Myofilament Myofibril Muscle Fiber Fascicle Muscle ```