Chapter 8- Musculoskeletal system

Question 1

what muscle is the alimentary canal made up of?

Answer 1

smooth muscle

Question 2

what are examples of connective tissue?

Answer 2

bones, cartilage, tendons and ligaments

Question 3

three types of muscle and their control

Answer 3

skeletal = voluntary 
cardiac = involuntary 
smooth = involuntary

Question 4

define extensibility

Answer 4

ability to be stretched

Question 5

define elasticity

Answer 5

ability to its original length after being stretched

Question 6

define contractibility

Answer 6

ability for muscles to contract

Question 7

structure of skeletal muscle

Answer 7

muscles held together by muscle bundles. each muscle bundle is held together by perimysium which allows adjacent bundles to slide across each other as they contract.

sheaths of epimysium also hold the bundles together. epimysium tapers off towards the end of the muscles, forming tendons.

perimysium and epimysium are both connective tissues.

Question 8

structure of skeletal muscle fibres

Answer 8

a muscle bundle is composed of muscle cells, called muscle fibres, that lie parallel to each other and is an elongated cylinder with many nuclei.

around the muscle fibre is a thin, transparent plasma membrane called the sarcolemma which contains cytoplasm, called the sarcoplasm.