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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
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