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Human Organs and Organ Systems Organs

• An organ is an organized group of _____________ that performs a specific function

• It is important to keep our organs healthy and functioning properly. When an organ does not work properly because of disease or injury, it is sometimes possible to transplant a healthy organ or part or an organ from a donor.

Organ Systems • A ____________________ that work together to perform one purpose. Your body has ______ organ

systems that keep you alive and healthy

Organ System Organs Involved Basic Function Integumentary System

- covers and protects body - glands help control body temperature

Skeletal System - supports body - allows movement - protects the body

Muscular System - works with skeletal system to provide movement - moves materials within the body

Digestive System - ingestion - digestion -absorption of nutrients - elimination of solid wastes

Respiratory System - exchange of gases

Circulatory System - transportation of materials (such as oxygen, nutrients, hormones, and wastes) within the body

Nervous System - controls bodily functions -coordinates responses and activities

Endocrine System - controls growth and development - controls metabolism

Excretory System - elimination of wastes

Reproductive System

- reproduction

Lymphatic System - protects body from disease - circulates fluid called lymph - absorbs and transports fats

Human Organs

• Skin

o The ________________ in your body.

o Functions:

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§

§

§

o Two layers:

§ ________________________________ - outer protective layer made up of _______________ tissue. - prevents ___________ and viruses from entering the body. - makes _____________ when the skin is exposed to UV radiation, needed for bone development.

§ ________________________________ - inner layer of the skin made up of ______________, nervous, and __________ tissue. - connective tissue provides structure and support - blood and blood vessels regulate body heat by ____________ to release heat, or ________________ to prevent heat loss. - pores in the skin secrete sweat - _____________ tissue (layers of fat) provide insulation and protection. - ______________ sense pain, pressure, heat, and cold and send information to the brain - muscle tissue in the dermis is responsible for goosebumps

CIRCULATORY SYSTEM

- The organ system made of the ______________, blood vessels and __________

- Absorbs and _________________ nutrients/oxygen to cells

- Carries ______________ to organs to eliminate from body

Heart ¡ Organ that ______________ blood in body

¡ Organized into ______ chambers ( _____________ and _________________

¡ Valves in the heart make sure the blood always goes the right way

Blood Vessels Arteries: Veins: Capillaries:

¡ Extremely small

¡ Capillaries allow _______ to diffuse from blood into cells

Circulation

¡ the heart pumps blood to __________ – ____________ goes into blood, _______________ leaves

¡ Blood travels through arteries and capillaries and gives oxygen to cells, wastes are carried away

¡ Blood ____________________ through veins

Heart Disease

¡ the most common causes of circulatory system disease are __________________ (high blood pressure) and arteriosclerosis (thickening of the ________________________)

¡ ______________ occurs when there is a blocked a blood vessel in the ____________.

¡ __________ occurs when there is a blockage in a blood vessel in the _______________.

RESPIRATORY SYSTEM • __________ is __________________, and _______ is _________________ and absorbed by the blood

• __________ leaves the blood and is ________________

• gas exchange (CO2/O2) between the respiratory and circulatory systems occurs in the _______________

• the most common cause of __________________ is cigarette smoking

• the chemicals present in cigarette smoke damage the lung’s ability to _________________________

Digestive System

ORGAN NAME STRUCTURE & FUNCTION

Mouth

Esophagus

Stomach

Small Intestine

Large Intestine

Liver

Gall Bladder

Pancreas

1.

2.

4.

6.

7.

9.

8.

5.

3.