Muscles

Question 1

Name 3 muscle types

Answer 1

1. cardiac
2. smooth
3. skeletal

Question 2

What is the composition of skeletal muscles?

Answer 2

actin and myosin microfilaments which makes uo the myofibrils. many myofibrils make up muscle fibre. muscle fibres make a fascicle

Question 3

Name different types of skeletal muscle

Answer 3

flat with aponeurosis
pennate (feather)
fusiform (long)
quadrate
circular/ sphincteral

Question 4

How do muscles attach to the skeleton

Answer 4

via tendons

• but aponeurosis attaches muscle to soft tissue rather than bone

Question 5

There are 2 points of attachment. what are these called?

Answer 5

origin- moves least during contraction

insertions -moves most

Question 6

What is muscle atrophy?

Answer 6

muscle wastage due to inactivity over a long period of time

Question 7

what is muscle hypertrophy?

Answer 7

when the muscles enlarge

Question 8

What is the difference between paralysis and spasticity?

Answer 8

paralysis involves muscles with no motor nerve control so they cant contract. on examination they have reduced tone.

Spasticity involves muscles with functioning motor nerves however the descending controls from the brain arent working properly. on examination there would be increased tone.

Question 9

What type of muscle is the diaphragm?

Answer 9

skeletal muscle

Question 10

What type of muscle is the trachea composed of?

Answer 10

smooth muscle