Dr Lucas: Lecture 1-4

Question 1

Types of muscles:

Answer 1

1. Striated
   - Skeletal (actively control/voluntary/muscle attached to the skeleton)
   - Cardiac (heart muscle)
2. Smooth
   - Single or multi unit (wether or not the cells are connected to eachother)

Question 2

Muscle cell synonyms (2)

Answer 2

• muscle fibre
• Myocyte

Question 3

Skeletal muscle deconstruction of unit (4):

Answer 3

1. Muscle cell/Muscle fibre/Myocyte
2. Multinucleate (fusion of precursors, facilitate cell function)
3. Strands of protein called myofibril
4. Sarcomere: subunit of myofibril (for contration)

Question 4

However, unlike cardiac and smooth muscle fibers, skeletal muscles are —–, meaning that ——

Answer 4

• multinucleated
• each cell possesses more than one nucleus