Chapter 7- Myology Flashcards Preview

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Flashcards in Chapter 7- Myology Deck (87)
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1

There are 3 types of muscle tissues;
1.-----------------
2.-----------------
3.-----------------

1. Skeletal muscle (voluntary)
2. Smooth muscle
3. Cardiac muscle (smooth muscle as well)

2

The functions off the muscles :
1.------------
2.------------
3.------------
4.------------

1. body movement
2. substance movement
3. control of substance movement
4. Thermogenesis .e.g if you are cold then the muscle will contract to
produce heat.

3

What are the charateristics of muscle tissues:

1. Electrical excitability
2. Contractility
3. Extensibility
4. Elasticity

4

The ability to respond to certain stimuli by producing electrical signals called------------

Electrical excitability

5

Electrical signals produced are called-------------

action potentials (AP) - part of the electrical excitability characteristic.

6

The ability of muscle tissue to generate tension/force when stimulated by AP called ----------

Contractility

7

The ability of muscle tissue to return to its original shape after contraction or stretch called ---------

Elasticity

8

The ability of muscle to stretch (lengthen) without being damaged called -----------------

notes that muscle can contact when stretched (e.g heart muscle)

Extensibility

9

Muscle Tissues

Specialized cells that use ---------in the generation of force.

ATP

10

Skeletal muscle aka ---------

striated muscle

11

Striations are alternating ---------and ---------bands that are characteristic of this muscle type.

Light
Dark `

12

Skeletal muscle is a ------------------

voluntary /conscious control (also subject to involuntary control)

13

Hierarchy of Skeletal muscle organization :
1.--------------
2.--------------
3.--------------
4.--------------

1. Muscle
2. Fascicle
3. Muscle Fibre (Muscle Cell)
4. Myofibril

14

Skeletal muscle subdivided into ---------------, named and sized in --------

- bundles of fascicles
- CM

15

Each Fascicle is made of many -----------------and sized in ----------------

muscle fibres ( 10-100 muscle fibre in each Fascicle),
MM

16

Muscle fibre aka --------------

muscle cell

17

Muscle Fibres is ----------shape, size in -----------, filled with ---------, multi------------, and has lots of ---------

cylindrical,
um*100.
myofibrils,
multinucleated,
mitochondria

18

Plasma cell of the muscle membrane called ---------

Sarcolemma

19

The cytoplasm of the muscle fibres-lots of oxygen called ----------------

Sarcoplasm

20

A protein that binds oxygen that has diffused into the muscle fibre and delivers it to the mitochondria.

Myoglobin

21

Tiny invaginations tunnel in from the sarclemma towards the Centre of the muscle fibre.

transverse tubules (T-tubules)

22

Sacrolemma;
sacro means---------
lemma means ---------

Flush
Sheath
Flush Sheath; it is the cell (plasma membrane of the muscle cell)

23

Muscle fibre has ;
1) lots of mitochondria
2)---------------
3)---------------

2) multinucleated (more than one neucleus)
3) filled with myofibrils

24

----------specialized contractile organelles of the muscles , sized in --------------, they extend the length of the muscle fibre.

Myofibrils
Um (in diameter)

25

Myofibrils are held in place by --------------------

Cytoskeletal protein

26

---------------fluid filled tubes and sacs running along and surrounding each Myofibril- and store and release --------into the cell (when it is needed )

Sarcoplasmic reticulum
Calcium (important component in muscle contraction)

27

------------contains a number of a Sarcomeres arranged in a series (end to end)

Myofibrils

28

----------the functional unit of Myofibril (of contraction)

Sarcomere

29

Sarcomere contains 2 contractile protein
1.----------
2.---------

1. actin
2 Myosin

30

-----------makes up a thin filaments

Actin