B1 - different types of muscle

Question 1

How many muscles are there in the human body?

Answer 1

• 640

Question 2

What are the three different types of muscle?

Answer 2

• skeletal muscle (voluntary)
• cardiac muscle
• smooth muscle (involuntary)

Question 3

What is striated tissue?

Answer 3

• muscle tissue in which the contractile fibres in the cells are aligned in parallel bundles. so that their different regions form stripes visible in a microscope
• muscles of this type are attached to the skeleton by tendons and are under voluntary control

Question 4

What are skeletal muscles?

Answer 4

• voluntary muscle
• ‘striated’ or ‘striped’ muscle
• these muscles are controlled by us
• they are essential for any form of movement (critical for sport and exercise)
• attached to the skeletal system via tendons and through contractions and pulling motions creates movement
• skeletal muscles can become fatigued during the exercise

Question 5

What are cardiac muscles?

Answer 5

• only found in the wall of your heart
• this works continuously until you die
• it is involuntary meaning you don’t consciously control it
• it is composed of a special type of striated tissue that has its own blood supply
• it’s contractions help to force blood through the heart and blood vessels to different parts of the body
• each contraction and relaxation of the heart muscle counts as 1 heart beat
• cardiac muscle never fatigues

Question 6

What are smooth muscles?

Answer 6

• an involuntary muscle that works without conscious thoughts
• this works under the control of the nervous system
• it is located in the walls of the digestive system and bloods vessels
• helps to regulate blood pressure and digestion

Question 7

What is the nervous system?

Answer 7

• the network of nerve cells and fibres which transmits nerve impulses between parts of the body