L1 (Part 2)

Question 1

MAIN FUNCTIONS OF MUSCULAR SYSYEM:

Answer 1

Mobility
Stability
Posture
Circulation
Respiration
Digestion
Urination
Childbirth
Vision
Organ protection
Temperature regulation

Question 2

The muscular system’s main function is to allow movement. When muscles contract, they contribute to gross and fine movement.

Answer 2

Mobility

Question 3

refers to large, coordinated motions and includes:
-walking
-running
-swimming

Answer 3

Gross movement

Question 4

involves smaller movements, such as:
-writing
- facial expressions
-speaking

Answer 4

Fine movement

Question 5

usually responsible for this type of action (Fine movement)

Answer 5

smaller skeletal muscles

Question 6

In fine movement, Most muscle movement of the body is under ______________. However, some movements are _____________, such as withdrawing a hand from a heat source.

Answer 6

conscious control

reflexive

Question 7

stretch over joints and contribute to joint stability

Answer 7

Muscle tendons

Question 8

Muscle tendons in the ______________ are crucial in stabilization.

Answer 8

knee joint and the shoulder joint

Question 9

The _______________ are those in the abdomen, back, and pelvis, and they also stabilize the body and assist in tasks, such as lifting weights.

Answer 9

core muscles

Question 10

help keep the body in the correct position

Answer 10

Skeletal muscles

Question 11

when someone is sitting or standing. This is known as _________-

Answer 11

Posture

Question 12

relies on strong, flexible muscles. Stiff, weak, or tight muscles contribute to poor posture and misalignment of the body.

Answer 12

Good posture

Question 13

leads to joint and muscle pain in the shoulders, back, neck, and elsewhere.

Answer 13

Long term, bad posture

Question 14

a muscle that pumps blood throughout the body.

Answer 14

Heart

Question 15

Outside of conscious control, and it contracts automatically when stimulated by electrical signals.

Answer 15

heart’s movement

Question 16

plays a further role in the circulation of blood around the body. These muscles maintain blood pressure and circulation in the event of blood loss or dehydration.

Answer 16

Smooth muscle in the arteries and veins

Question 17

They expand to increase _____________ during times of intense exercise when the body requires more oxygen.

Answer 17

blood flow

Question 18

involves the use of the diaphragm muscle.

Answer 18

Breathing

Question 19

a dome-shaped muscle located below the lungs

Answer 19

diaphragm

Question 20

When the diaphragm contracts, it pushes _____________, causing the chest cavity to get bigger.

Answer 20

downward

bigger

Question 21

Smooth muscles in the gastrointestinal or GI tract control ____________

Answer 21

Digestion

Question 22

stretches from the mouth to the anus.

Answer 22

GI tract

Question 23

Food moves through the digestive system with a wave-like motion called

Answer 23

peristalsis.

Question 24

Muscles in the walls of the hollow organs _________________ to cause this movement, which pushes food through the esophagus into the stomach.

Answer 24

contract and relax

Question 25

The _____________ in the stomach relaxes to allow food to enter, while the _____________ mix food particles with stomach acid and enzymes.

Answer 25

upper muscle lower muscles

Question 26

comprises both smooth and skeletal muscles, including those in the: bladder kidneys penis/vagina prostate ureters urethra

Answer 26

urinary system

Question 27

must work together to hold and release urine from the bladder.

Answer 27

muscles and nerves

Question 28

_______________, such as poor bladder control or retention of urine, are caused by damage to the nerves that carry signals to the muscles.

Answer 28

Urinary problems

Question 29

expand and contract during childbirth

Answer 29

Smooth muscles in the uterus

Question 30

help to guide the baby’s head down the birth canal.

Answer 30

pelvic floor muscles

Question 31

______________ muscles around the eye control its movements.

Answer 31

Six skeletal

Question 32

Six skeletal muscles work quickly and precisely, and allow the eye to:

Answer 32

maintain a stable image scan the surrounding area track moving objects

Question 33

protect the internal organs at the front, sides, and back of the body.

Answer 33

Muscles in the torso

Question 34

provide further protection

Answer 34

The bones of the spine and the ribs

Question 35

also protect the bones and organs by absorbing shock and reducing friction in the joints.

Answer 35

Muscles

Question 36

__________ important function of the muscular system. Almost ____________percent of the heat a person generates in their body comes from contracting muscles.

Answer 36

Maintaining normal body temperature 85

Question 37

When body heat falls below optimal levels, the skeletal muscles increase their activity to make heat. ____________is one example of this mechanism. Muscles in the blood vessels also contract to maintain body heat.

Answer 37

Shivering

Question 38

Body temperature can be brought back within normal range through the ______________-. This action increases blood flow and releases excess heat through the skin.

Answer 38

relaxation of smooth muscle in the blood vessels