Histology

Question 1

What is the function of Actinin in the skeletal muscles?

Answer 1

Binds the tail end of actin filaments to the Z-disc

Question 2

Function of Myomesin

Answer 2

Binds tail ends of myosin to the M-disc

Question 3

Function of Titin

Answer 3

Binds the head ends of myosin filaments to the Z-disc

Question 4

What are the two types of muscle fibres?

Answer 4

1.Red muscle fibres

2. White Muscle fibres

Question 5

Myoglobin is high in which type of muscle fibres?

Answer 5

High in Red muscle fibres and low in White muscle fibres.

Question 6

Describe the type of muscle fibres based on their contractility.

Answer 6

1. Red fibres are relatively slow to contract; Slow twitch fibres or Type 1 fibres
2. White muscle fibres contracts faster; Fast twitch fibres or Type 2 fibres.

Question 7

What is a neurovascular hilus?

Answer 7

The area where a nerve supplying a muscle enters, alongside it’s main blood vessels.