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BIOA02H3 (479)
Lecture

Lecture 5

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Department
Biological Sciences
Course
BIOA02H3
Professor
Ivana Stehlik
Semester
Winter

Description
H EARTS  AND  CIRCULATORY  SYSTEMS C LOSED AND OPEN  CIRCULATORY  SYSTEMS NORMA HUMANHEARTCIRCULATI BLOO IRED. Major advantages: closed and high pressure and small diameter blood vessels.  The open circulatory system doesn’t flow  through the fluids and known as “hemolymph” The hemolyph will collect the extracellular blood. The mammalian blood is red when it’s oxygenated, but amphibians have blue. Bright blue when it’s oxygenated. T HE ADULT HUMAN MAMMA  HEART AND CIRCULATORY SYSTEM Similar to bird hearts. 4 chambers. They pump to the Pulmonary Artery to get oxygenated. The Aorta is the major blood vessel. Right to Left. This is a low pressure circuit compared to the earlier one.  Low Pressure in pulmonary because the blood vessels might burst and lung tissue damage.  Artery – DE­oxygenated (AWAY FROM THE HEART)  Veins – Oxygenated.  (GOES IN TO THE HERT)  Ermergerd whales sinkinh te De bottuhm T HE HUMAN  FETAL  HEART Receives blood from umbilical cord The fetus aren’t breathing air. It’s strengthening the blood muscles. The bypasses – formen ovale and ductus arteriosus  Inferiosr vena cava and enters right venacava It’s bypassing right ventrical and lung Some of them goes directly to the aorta Some of them skips the lungs. C EPHALOPOD HEARTS  AND CIRCULATORY  SYSTEMS Invertebrates and intelligent Their cs is identical to the human systems except theirs look diff and have gills. Leaves the vessel through EFFERENT AFFERENT in to the organ Compare mammalian and squid circulation. The left side are similar. They are pumping oxygenated blood in to the systemic  tissue. Right 9the deoxygenated in to the lungs) in to the gills. W ATER ­BREATHING  FISH HEARTS  AND  CIRCULATORY  S
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