Interactive physiology Muscular system
I. Functions of Skeletal Muscle
A. Movement
B. Posture
C. Generate Heat
D. Stabilize Joints
II. Anatomy of Skeletal Muscle
A. Connective Tissue Coverings: See IP-CD: Muscular System, Skeletal Muscle Anatomy Review.
1. Fascia - fibrous connective tissue which separates individual muscles
2. Epimysium
3. Perimysium
4. Endomysium
5. Fascicle -
6. Tendons -
7. Aponeuroses -
B. Skeletal Muscle Fibers and Microscopic Anatomy: See IP-CD: Muscular System, Skeletal Muscle Anatomy Review.
1. Myofiber (muscle fibers or muscle cells)
2. Sarcolemma
3. Sarcoplasmic reticulum (SR)
4. Terminal cisternae of SR
5. Transverse tubules (T-tubules)
6. Mitochondria
7. Myofibrils
8. Cytosol (Sarcoplasm)
9. Sarcomere
a. Z lines
b. M line
c. A bands
d. I bands
e. H zone
10. Myofilaments
a. Actin
i. Troponin ii. Tropomyosin
b. Myosin
C. Neuromuscular Junction - See IP-CD: Muscular System: Neuromuscular Junction section
1. Motor neuron (axon terminal)
2. Motor end plate of a myofiber (sarcolemma, nuclei & mitochondria)
3. Synaptic cleft
4. Neurotransmitter vesicles and neurotransmitter molecules (ACh)
D. Motor Units - A.D.A.M. Physiology: Contraction of Motor Units p. 3 only
1. Small motor units (fewer myofibers innervated)
2. Large motor units (more myofibers innervated)
III. Skeletal Muscle Physiology: See IP-CD: Sliding Filament Theory.
A. Summary of the Sliding Filament Model of Muscle Contraction
In your own words, write a brief summary of the process of muscle contraction.
1. _____________________________________________________________
2. _____________________________________________________________
3. _____________________________________________________________
4._____________________________________________________________
5. _____________________________________________________________
B. Muscle Relaxation: See A.D.A.M. Interactive
A. Movement
B. Posture
C. Generate Heat
D. Stabilize Joints
II. Anatomy of Skeletal Muscle
A. Connective Tissue Coverings: See IP-CD: Muscular System, Skeletal Muscle Anatomy Review.
1. Fascia - fibrous connective tissue which separates individual muscles
2. Epimysium
3. Perimysium
4. Endomysium
5. Fascicle -
6. Tendons -
7. Aponeuroses -
B. Skeletal Muscle Fibers and Microscopic Anatomy: See IP-CD: Muscular System, Skeletal Muscle Anatomy Review.
1. Myofiber (muscle fibers or muscle cells)
2. Sarcolemma
3. Sarcoplasmic reticulum (SR)
4. Terminal cisternae of SR
5. Transverse tubules (T-tubules)
6. Mitochondria
7. Myofibrils
8. Cytosol (Sarcoplasm)
9. Sarcomere
a. Z lines
b. M line
c. A bands
d. I bands
e. H zone
10. Myofilaments
a. Actin
i. Troponin ii. Tropomyosin
b. Myosin
C. Neuromuscular Junction - See IP-CD: Muscular System: Neuromuscular Junction section
1. Motor neuron (axon terminal)
2. Motor end plate of a myofiber (sarcolemma, nuclei & mitochondria)
3. Synaptic cleft
4. Neurotransmitter vesicles and neurotransmitter molecules (ACh)
D. Motor Units - A.D.A.M. Physiology: Contraction of Motor Units p. 3 only
1. Small motor units (fewer myofibers innervated)
2. Large motor units (more myofibers innervated)
III. Skeletal Muscle Physiology: See IP-CD: Sliding Filament Theory.
A. Summary of the Sliding Filament Model of Muscle Contraction
In your own words, write a brief summary of the process of muscle contraction.
1. _____________________________________________________________
2. _____________________________________________________________
3. _____________________________________________________________
4._____________________________________________________________
5. _____________________________________________________________
B. Muscle Relaxation: See A.D.A.M. Interactive