Organ Systems Worksheet pages: 93-107
1.
Describe the purpose or function of each organ system...
Circulatory System: movement of nutrients and waste around the body
Nervous System: response to stimuli. Responds to changes in environment
Endocrine System: creates and releases hormones
Excretory System: removes wastes from body
Digestive System: breaks food down into molecules and absorbs them
Respiratory System: gas exchange. Oxygen in , carbon dioxide out
Lymphatic System: aka immune. Defends against infections
Reproduction System: creates sperm or eggs
2.
Label the indicated organs or structures. Look at figure 3.14 and 3.25
3.
Complete the chart using your notes/handouts from the organ systems presentations.
Organ
Function
Associated System
Heart
Pump blood around body
circulatory
Artery
Carries blood away from heart
circulatroy
Veins
Carries blood to heart
circulatory
capillaries
-thin walled blood vessel, exchanges gases between the blood and body tissues
Circulatory
stomach
-location of digestion, breaks food down with enzymes
digestive
Small
intestines
Alveoli
Finishes food break down, absorbs nutrients
Digestion
Area of gas exchange
respiratory
pancreas
Produces enzymes that aid with digestion
Endocrine/digestive
Connects the nose
respiratory
Joins uterus to vaginal opening
reproductive
Prostate
Secretes a fluid needed in semen
reproductive
Ovaries
- small, oval-shaped glands on either side of the uterus
-produce eggs and hormones
Area where fertilized egg develops
Reproduction
- oval organs in the scrotum
- produce testosterone, and generating sperm
Removes urine from bladder to exterior of body
Reproduction
Carry eggs from ovary to uterus
reproductive
- produces lymphocytes (white blood cells)
- filters damaged/dead red blood cells
Carries hormones
Lymphatic
Filters blood, detoxifies
digestive
Stores bile
digestive
bladder
- temporarily stores liquid waste (urine)
Excretory
Kidneys
Filter blood to produce urine
excretory
Large
intestines
Pituitary gland
Removes water from what was once food (chyme)
digestive
The master gland….creates and stores hormones
endocrine
Adrenal gland
Releases hormones…fight or flight
endocrine
Thyroid gland
- stimulates secretion of thyroid gland hormone responsible for metabolism
endocrine
Hypothalamus
gland
Helps control the release of other hormones
endocrine
Pharynx
Cervix
Uterus
testes
Urethra
Fallopian
tubes
Bone marrow
Lymph vessels
Liver
Gall bladder
reproduction
excretory
lymphatic
Answer each of the following questions regarding the different organ systems on a separate sheet:
4.
Explain how three structures of the respiratory system work together to accomplish the task of breathing.
Diaphragm moves to bring air in and out of lungs
Treachea carries air to and from lungs
Lungs are the site of gas exchange
5.
The circulatory system is a transportation system. Use an analogy of roadways to explain how this system
functions.
Roads are used as paths to move things from where they are made or stored to where they are
needed.
The circulatory system uses veins and arteries to move blood that carries things from where they
are made to where they are needed.
6.
Explain how the excretory system eliminates waste.
Urine sent to bladder. The bladder contracts and sends urine out of urethra.
The large intestine sends solid waste to rectum where it is released.
7.
Explain how each of these organ systems interact:
a) Circulatory System and the Respiratory System
resp brings in oxygen and circ carries it to body
b) Immune (Lymphatic) System and the Circulatory System
Immune creates substances to fight infections – circ carries it around
c)
Excretory System and the Reproductive System
In males especially, the urethra is also used to deliver sperm
d) Nervous System and the Endocrine System
Nervous and endocrine work together to keep body in balance. Nervous is fast and short term
Endocrine is slower and long term
e)
Nervous System and the Digestive System
Digestive tells nervous when it is empty or full which you interpret as hungry or not
f)
Excretory System and the Circulatory System
Circulatory moves blood around so the circulatory can filter and remove wastes
8.
Some organs have roles in more than 1 system. Explain 2 different functions of each organ and identify
the organ systems it plays a part in.
a) Brain – control and feedback of all systems
b) Pancreas – endocrine – secretes hormones….digestive – secretes enzymes
c) Bone marrow – circulatory – creates red blood cells….. Immune – creates white blood cells
9.
The endocrine system and the reproductive system are closely linked. Explain why these two systems are
dependent on each other.
Hormones from the endocrine send signals to reproductive to signal
appropriate times for sexual maturity…both long and short term
eg long term = puberty
short term = ovulation