body systems

Question 1

Level 1: Cell?

Answer 1

the smallest living unit found in all parts of the human body.

Question 2

Level 2: Tissues?

Answer 2

Similar cells grouped together to do a specific job

Question 3

Level 3: Organs?

Answer 3

Structures composed of several kinds of tissue

Question 4

Level 4: Body Systems?

Answer 4

Groups of organs working together to perform complex functions

Question 5

body system: 1. Circulatory / Cardiovascular System

Answer 5

function:
- Transports substance like oxygen (O2), carbon dioxide (CO2), water (H2O), nutrients.
- Remove Waste throughout the body

organs: - Blood
- Heart
- Blood vessels (arteries, veins, and capillaries)

Question 6

body system: 2. Respiratory system

Answer 6

function:

• Moves air into and out of lungs
• controls gas exchange (oxygen and carbon dioxide) between blood and lungs

organs: - Lungs, nose, mouth
- trachea
- Bronchi

Question 7

body system: 3. Digestive system

Answer 7

function:
- Extracts and absorbs nutrients from food.
- removes wastes
- maintains water
- chemical balances

organs: - Mouth, Salivary glands, Esophagus, stomach, pancreas, liver, gall bladder, small and large intestine

Question 8

body system: 4. Urinary (renal) system

Answer 8

function:

• removes wastes from blood
• regulates concentration of body fluids

organs: - kidneys, urinary bladder, ureters, urethra

Question 9

body system: 5. Musculoskeletal system

Answer 9

function: BONES
- Skeleton supports and protects
organs
- Gives the body shape
- Allows movement
- Bone marrow makes new blood cells
function: MUSCLES
- Muscles allows for movement

organ:

• Skeletal Muscles; are found on bones and helps to move the body.
• Cardiac Muscles; make up the heart and help the heart to pump blood throughout the body.
• Smooth Muscles; are found in internal organs such as the esophagus and stomach.

Question 10

body system: 6. Nerves system

Answer 10

function:
- Regulates behavior
- Maintains homeostasis
- Regulates other organ systems
- Controls sensory and motor functions

organs: Brain, spinal cord, nerves.

Question 11

body system: 7. Endocrine system

Answer 11

function:

• Hormones are chemical messengers produced by glands and travel through the blood.
• Hormones are involved in growth, development, metabolism.
• Homeostasis is the maintenance of a constant internal environment. also regulating body temperature, blood glucose levels and water content.

organs:
- glands are organs that produce hormones.
examples; Pancreas- Insulin