Week 4 Video 2 - Skeletal muscle structure

Question 1

Muscles consist of a …. which is composed of skeletal muscle tissue and also blood vessels and nerves

Answer 1

Belly

Question 2

At each end of a belly is a…

Answer 2

Tendon

Question 3

Tendons are what?

Answer 3

Fibrous connective tissue attaching muscle to bone

Question 4

What muscles form the quadriceps?

Answer 4

Rectus femoris, vastus lateralis, vastus medialis and vastus intermedius

Question 5

Fascia is?

Answer 5

A dense irregular connective tissue that surrounds muscle groups

Question 6

Epimysium..

Answer 6

Wraps the entire muscle

Question 7

Fasciculi…

Answer 7

Bundles of muscle fibres

Question 8

Perimysium…

Answer 8

Covers each fasciculi

Question 9

Endomysium…

Answer 9

Surrounds each muscle fibre within each fasciculi

Question 10

The third layer of connective tissue that runs the length of the muscle and forms the tendon is?

Answer 10

The endomysium

Question 11

Skeletal muscle main function?

Answer 11

To contract

Question 12

For a muscle fibre to contract it must first be…

Answer 12

Stimulated by an impulse from a nerve

Question 13

What require large amounts of energy?

Answer 13

Contraction

Question 14

Muscles need … and … delivered via capillaries for metabolism

Answer 14

Oxygen and nutrients

Question 15

For each nerve that penetrates a skeletal muscle there is…

Answer 15

1 artery and 1-2 veins

Question 16

What is histology?

Answer 16

The study of the micro anatomy of cells, tissue etc under a microscope

Question 17

The white layer that covers the muscle fibre is called…

Answer 17

Endomysium

Question 18

Each fibre consists of smaller units called MYO..

Answer 18

FIBRILS

Question 19

Under the endomysium is the?

Answer 19

Basal lamina

Question 20

Where does energy production occur?

Answer 20

Mitochondria

Question 21

Myofibrils are composed of smaller structures called?

Answer 21

Myofilaments

Question 22

Myofilaments can be referred to as either..

Answer 22

Thin or thick

Question 23

Myofibrils are divided into compartments known as..

Answer 23

Sarcomeres

Question 24

Sarcomeres are separated by what lines?

Answer 24

Z

Question 25

The thin or thick bands is what gives the muscle the ... appearance?

Answer 25

Striated

Question 26

Thin myofilaments are composed of 2 a... strands

Answer 26

Actin

Question 27

The thin myofilaments with actin are .... sites

Answer 27

myosin binding sites

Question 28

Thick myofilaments are composes of m...

Answer 28

Myosin

Question 29

The myosin molecules are called ... bridges?

Answer 29

Cross bridges