Muscles Flashcards
1
Q
What are the 3 important properties of muscles?
A
- Excitability
- Contractibility
- Elasticity
2
Q
What are the 3 types of muscle?
A
- Cardiac Muscle
- Skeletal Muscle
- Smooth muscle
3
Q
What are the important factors of CARDIAC MUSCLE?
A
- Striated (stripey)
- Each strand is connected via a intercalated disc
- Works continually (Not controlled)
4
Q
What are the important factors of SMOOTH MUSCLE?
A
- Well defined fibres
- Have a single nucleus
- Found in hollow organs (e.g Arteries)
5
Q
What are important factors of SKELETAL MUSCLE?
A
- Straited (stripey)
- long cylindrical cells parallel
- Multi nuclei and mitochondria
- Can have endurance or explosive contractions
6
Q
What are the 7 different skeletal muscle architecture?
A
- Fusiform
- Parallel
- Convergent
- Unipennate
- Bipennate
- Multipennate
- Circular
7
Q
What is an example of Fusiform?
A
- Bicep brachii
8
Q
What is an example of Parallel and why?
A
- Rectus abdominus
2. Fibres run parallel to the axis of movement.
9
Q
What is an example of convergent and definition?
A
- Pectoralis Major
2. There is a broader insertion at one end compared to the other
10
Q
What is an example for the following:
- Unipennate
- Bipennate
- Multipennate
What is the definition?
A
- Unipennate e.g. Extensor Digitorum
- Bipennate e.g. Rectus femoris
- Multi pennate e.g. deltoid
Fibres are angled to the point of force generation.
11
Q
What is the structure of a skeletal muscle?
A
- Bone
- Tendon
- Epimysium (outer layer)
- Perimysium ( Inner larger circles)
- Fasicals wrapped in perimysium
- Endomysium (between the fibres)
- Within the fasicals you have the muscle fibres
12
Q
What are the 3 different muscle fibre types?
A
- Type 1 (slow oxidated fibres
- Type 1a (oxidated fibres)
- Type IIb (fast Glycolytic Fibres
13
Q
GO OVER SLIDING FILAMENT THEORY BY WRITING!!
A
