The Organ Systems/circulatory

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The Circulatory System


Function of System:

Circulates blood, nutrients, hormones, oxygen, and other substances throughout the body.


How it aids in homeostasis:

Helps to fight diseases, maintains internal body temperature, and maintains proper pH.


Image of system:

Circulatory System en.svg


Major Organs:

Heart - Pumps the blood throughout the body.
Arteries - Carry blood away from the heart.
Veins - Carries blood toward the heart.
Blood - Contains hemoglobin which aids in oxygen transport.

Heart

Human Heart: Four chambers


Comparative Anatomy:

Human hearts have four chambers. Frogs have three chambers. The fish heart only has an atrium and a ventricle. Blood is transported from the heart to the Arteries through Arterioles and then to the capillaries, it comes back to the heart through venules and then to veins. All three organisms have closed circulatory systems.

Fish - two chamber heart

Fish: Two chamber heart

Frog - three chamber heart

Frog: Three chamber heart


Reference sources (APA):

Esi.stanford.edu. N.p., n.d. Web. 12 Apr. 2017. " Ribbiting Facts on the Human and Frog Circulatory and Respiratory Systems." Emaze Presentations. N.p., n.d. Web. 12 Apr. 2017.


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