Circulation - Animals Circulation Blood is the transport...

Info iconThis preview shows pages 1–5. Sign up to view the full content.

View Full Document Right Arrow Icon
1 Animals: Circulation Animals: Circulation Blood is the transport medium of the circulatory system Outline Outline 1. Key Concepts 2. Circulatory system basics 3. Types of circulatory systems 4. Components of blood 5. Human circulatory system 6. Lymphatic system 7. Key terms 8. Conclusions Key Concepts: Key Concepts: How important is your circulatory system? 50% of all deaths in this country: heart disease; heart attack; diabetes; etc. 1. All cells survive by exchanging substances with their surroundings 2. Blood is the transport medium of the circulatory system 3. There are two types of circulatory systems (open and closed) 4. A four-chambered heart pumps blood through the body of birds and mammals
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
2 Key Concepts: 5. The circulatory circuits are the pulmonary and systemic circuits 6. Arteries transport blood from the heart whereas veins transport blood to the heart 7. Arterioles control blood-flow through each organ 8. Capillaries are the vessels where diffusion takes place 9. The lymphatic system has three functions 1. Drainage 2.Absorption 3.Delivery of pathogens Types of circulatory systems Types of circulatory systems 1. No circulatory system (gastrovascular cavities) - gastrovascular cavity functions in digestion and distribution of nutrients - cnidarians, planarians 2. Open circulatory systems - blood not always in vessels (hemolymph = blood + interstitial fluid) - insects, spiders, mollusks 3. Closed circulatory systems - blood always in vessels - earthworm, squids, octopuses, and vertebrates Gastrovascular Gastrovascular Cavities Cavities
Background image of page 2
3 Flow Through an Open Flow Through an Open Circulatory System Circulatory System Grasshopper Flow Through a Closed Flow Through a Closed Circulatory System Circulatory System Earthworm circulatory system circulatory system basics basics 1. A fluid-blood: as a medium of transport 2. A system of channels – blood vessels: conduct the blood throughout the body 3. A pump – the heart: keep the blood circulation
Background image of page 3

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
4 Closed Circulatory Systems of Closed Circulatory Systems of Vertebrates Vertebrates Fish – 1. O2 rich blood to tissue directly 2. O 2 poor blood to the heart 3. pass two beds Amphibian – 1. mixed blood pumped to body tissue 2. two atria and one ventricle Closed Circulatory Systems of Closed Circulatory Systems of Vertebrates Vertebrates
Background image of page 4
Image of page 5
This is the end of the preview. Sign up to access the rest of the document.

{[ snackBarMessage ]}

Page1 / 17

Circulation - Animals Circulation Blood is the transport...

This preview shows document pages 1 - 5. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online