Muscular system

Question 1

What is the muscular system

Answer 1

A muscle is a tissue whose cells can contract to produce movement or force.This occurs following the generation of mechanical energy from chemical reactions

Question 2

What is the function of muscle tissues

Answer 2

Producing all body movements

Stabilising the positions of the body, such as standing and sitting

Storing and moving materials within the body, such as the blood in the heart and blood vessels

Maintaining of the body temperature.

Question 3

what are the four features of msucles tissue

Answer 3

Excitability
Contractility
Extensibility
Elasticity

Question 4

What is excitability

Answer 4

the ability of the muscles to respond to stimuli (also known as irritability)

Question 5

What is Contractility

Answer 5

the ability of the muscles to contract forcefully after stimulation

Question 6

What is Extensibility

Answer 6

the ability of the muscles to stretch without being damaged

Question 7

What is Elasticity

Answer 7

the ability of the muscles to return to their normal size after contraction and relaxation.

Question 8

What are there three types of muscle

Answer 8

smooth
cardiac
skeletal

Question 9

What is smooth muscle

Answer 9

Smooth muscles are non-striated and involuntary. They form the walls of the luminal structures such as blood vessels, airways, and most pelvic and abdominal organs. They are composed of spindle-shaped fibers with a centrally located nucleus.

Question 10

What is cardiac muscles

Answer 10

Cardiac muscles have a striated pattern and exhibit rhythmic contractions due to sarcomeres, which are involuntary. They are responsible for the contraction and relaxation of the heart.

Question 11

What is skeletal muslces

Answer 11

The tissue of skeletal muscles is made up of long, cylindrical fibers that have nuclei located on the outer edge. These muscles are striated and voluntary, and they are attached to the skeletal system. The primary function of skeletal muscles is to move the skeleton. Tendons connect muscles to the skeleton, while ligaments bind bone to bone.

Question 12

What are within skeletal muscles

Answer 12

Each skeletal muscle is made up of thousands of muscle fibers wrapped in connective tissue sheaths. The bundles of muscle fibers in skeletal muscle are called fascicles.

Question 13

What are epimysium

Answer 13

is the outer most connective tissue sheath surrounding the entire muscle

Question 14

What is perimysium

Answer 14

surrounds muscles bundles and the endomysium surrounds the muscle fibres

Question 15

What is sarcolemma

Answer 15

is a flesh like membrane that surrounds individual muscle fibres (myofibrils

Question 16

What is sarcomere

Answer 16

basic contractile unit of a muscle fibre

Question 17

How does skeletal muscle work

Answer 17

Most muscles in the human body are attached to bones that form a joint. When a muscle contracts, it pulls one bone towards the other. The attachment of the muscle tendon to the stationary bone is known as the origin of the muscle. On the other hand, the attachment of the muscle tendon to the movable bone is known as the insertion of the muscle. The portion of the muscle between the tendons of origin and insertion is referred to as the belly of the muscle.

Question 18

What is the Axial muscular system

Answer 18

The axial muscular system, which includes the muscles of the head, vertebral column, and thoracic cage, constitutes about 60% of the entire muscular system.

Question 19

What does the axial muscular system include

Answer 19

The following are the different groups of muscles in the human body:
1. The muscles in the head and neck area that are responsible for facial expressions, swallowing, and chewing.
2. The muscles in the vertebral column that help in flexing and extending the spine and head.
3. The muscles in the trunk area that are located in the walls of the thoracic, abdominal, and pelvic cavities.
4. The muscles in the perineum, which connect the sacrum and coccyx to the lower part of the hip bones.