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Intro to Muscular Anatomy
Powerpoint slides
32
Anatomy
Undergraduate 4
09/15/2012

Additional Anatomy Flashcards

 


 

Cards

Term
Name the 4 functional features of muscles
Definition
  1. Contractility
  2. Excitability
  3. Extensibility
  4. Elasticity
Term
Skeletal muscle makes up __% of body weight and cells are striated/nonstriated
Definition

40%

 

striated

Term

Cardiac muscle tissue occurs in the walls of the _____

 

Definition
heart
Term
Smooth muscle tissue is striated/nonstriated and found where?
Definition

nonstriated

 

walls of hollow organs

Term

Name the following connective tissues:

[image]

Definition
  1. Epimysium
  2. Perimysium
  3. Endomysium
  4. Muscle fiber in middle of a fascicle
Term

I think you can figure out what to do i mean right?

 [image]

Definition
  1. Bone
  2. Epimysium
  3. Tendon
  4. Perimysium
  5. Fascicle
Term
[image]
Definition

6.  Blood Vessel

7.  Fascicle (wrapped by perimysium)

8.  Endomysium (between individual muscle fibers)

9.  Muscle fiber

 

Term
Muscle is surrounded by ______.
Definition
Epimysium
Term
Fascicle is surrounded by ______.
Definition
Perimysium
Term
Muscle fibers are surrounded by ______.
Definition
Endomysium surrounds sarcolemma which surround the muscle fibers.
Term
Myofibrils are individually surrounded by ________.
Definition
Sarcoplasmic reticulum
Term

Rank these in order from smallest to largest:

 

Muscle fiber, myofibril, fascicle, muscle

Definition
Muscle, fascicle, muscle fiber, and myofibril
Term
Most skeletal muscles run from where to where?
Definition
One bone to another
Term
What connects muscle to bone?
Definition
Tendons
Term
What is the less movable attachment (fixed) and the more movable attachment?
Definition

Origin- less movable (fixed)

Insertion- more movable

 

We have a whole semester of this AOI crap coming up.  Get excited!!

Term
[image]
Definition
  1. Origin by direct attachment
  2. Brachialis
  3. Tendon
  4. Insertion by indirect attachment
Term
[image]
Definition
  1. Sarcolemma
  2. Mitochondrion
  3. Myofibril
  4. Nucleus
  5. Light I band
  6. Dark A band
Term
Striations are the result of the internal structure of _________?
Definition
Myofibrils
Term

Myofibrils

-Are a long row of repeating segments called ________.

Definition
Sarcomeres
Term
What is the basic unit of contraction of a skeletal muscle?
Definition
Sarcomere
Term

Thin filaments are composed of what?

 

Thick filaments are composed of what?

Definition

Thin- actin

Thick- myosin

Term

"A" bands, do not change length and contain what?

 

Definition
The full length of the thick filament
Term
The "H" zone is a center part of "A" band where only thin/thick filaments occur?
Definition

thick

 

(an "H" is a wider letter than an "I" and has the thick filament)

 

Genius!

Term
What line is inside the H zone?
Definition
"M" line
Term
[image]
Definition
  1. Thin (actin) filament
  2. Thick (myosin) filament
  3. H zone
  4. Z disc
  5. A band
  6. I band
  7. M line
Term
[image]
Definition
  1. Z disc
  2. I band
  3. M line
  4. Thin (actin) filaments
  5. Elastic (tintin) filaments
  6. Thick (myosin) filament
  7. Myosin heads

 

 

Term

Part of a skeletal muscle fiber (cell)

Name 1-5

[image]

Definition
  1. Z disc
  2. M line
  3. H zone
  4. A band
  5. I band
Term

Name 6-12

[image]

Definition

6.  Sarcolemma

7.  Triad

8.  T tubule

9.  Terminal cistern of the sarcoplasmic reticulum (2)

10.  Tubules of the sarcoplasmic reticulum

11.  Myofibrils

12.  Mitochondria

Term
[image]
Definition
  1. Thin (actin) filaments
  2. Myosin heads
  3. Thick (myosin) filaments
Term
[image]
Definition
  1. Myosin molecule
  2. Myosin head
Term

During contraction:

 

what happens to the Z discs?

 

what happens to the H zone?

 

what happens to the I, Z & A length?

Definition
Z discs move closer together, the H zone & the I band shorten, the Z & A length do NOT change (constant)
Term
[image]
Definition
  1. Motor neuron cell body
  2. Motor neuron axon
  3. spinal cord
  4. motor unit 1
  5. motor unit 2
  6. Axon terminals (at neuromuscular junction)
  7. Branching axon (to motor unit)
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