Essay about Circulatory System Notes

Submitted By cwcat1997
Words: 518
Pages: 3
Open Document
Circulatory System
Oxygen and nutrient distribution to cells around the body through diffusion.
- Fish: single loop, 2 chambers
Problem: lack of O2 combat this with countercurrent exchange system in gills
1 ventricle, 1 atrium single loop circulation heart gills body aquatic challenge: lower O2 content
Non-polar O2 dissolves poorly in polar H2O
Gil countercurrent exchange: maximizes O2 diffusion
Problem: slow delivery of O2 fish an manage with the lack of O2 because it doesn’t take much energy to swim land animals would have a harder time going through this process
Amphibians and Reptiles: double loop, 3 chambers double circulation
2 atria, 1 ventricle
- New problems:
Dehydration
Mixing of O2 poor and O2 rich blood in the heart survive mixing because most breathe O2 through the skin birds and mammals can not survive the blood mix
- why not? energy needed for flight/ larger size brain/ endothermic animals/ need for more O2 and glucose to make ATP to fuel increased metabolic demands.
- Birds and Mammals: double loop, 4 chambers wall (septum) separates the two types of blood
2 atria, 2 vesicles Fast delivery of O2 rich blood
- Vascular System (mammals) arteries always carry blood away from the heart do not always carry oxygenated blood (pulmonary arteries) veins always carry blood to the heart d do not always carry deoxygenated blood (pulmonary veins) artery arteriole capillary venule vein pressure highest in the arteries, lowest in the veins
Artery walls stressed by surge of blood coming from pump
- systolic pressure: highest pressure from bulge of blood flow
- diastolic pressure: lowest pressure from heart at rest
• Low pressure = no blood flow
• High pressure = leaky vessels
• Receptors in the brain (baroreceptors) receive information about blood pressure
• Control Center- deep brain stem region
• Effectors:
- change cardiac output (pump faster/stronger)
- change vascular resistance (constrict/dilate arterioles)
- functional unit: capillary
• goal: deliver needed materials to body cells, pick up waste
• Big surface area of capillary beds- capillaries are micrometers from body cells
• Blood travels
Show More

Related Documents: Essay about Circulatory System Notes

Essay about Weird: Vertebrate and Amphibians Reptiles Birds

knowledge from the in class activities, your notes, you Integrated Science text, or the internet, you will look at the major trends in the evolution of six body systems: skeletal, nervous, respiratory, circulatory, reproductive, and digestive. In order understand the evolution of these systems you will compare 5 major vertebrate classes: Osteichthyes (bony fish), Amphibia (amphibians), Reptilia (reptiles), Aves (birds), and Mammalia (mammals). For each system you will be asked to complete the following:…

Words 1052 - Pages 5

Essay on ENT4600 Module1 LecturewithNotes

4/10/2011 Entomology 4600 The Living Realm Where Insects Fit Among Living Things David J. Shetlar, Ph.D. The “BugDoc” The Ohio State University, OARDC & OSU Extension Columbus, OH © March, 2011, D.J. Shetlar, all rights reserved Notes: Title Slide - 1 4/10/2011 Notes: Hi, I’m Dave Shetlar! I go by the professional nickname of the BugDoc. In this lecture, I will cover the living realm, that is, all living things! More specifically, the primary goal of this lecture is to provide you with the biological…

Words 2736 - Pages 11

Know The Effects Of Psilocybin Magic Mushrooms

Study guide 1102 – Test 4, S13 I. Chapter 19 Fungi A. Know the effects of Psilocybin (magic mushrooms), what are the possible benefits medically of the substance in the mushrooms? Benefit sensory system, emotions, feelings of spirituality and well being B. Know the 5 differences between fungi and plants NOT photosynthetic, heterotrphic, cell wall made of chitin, different strategy for digestion, store carbohydrates as glycogen C. Know their nutrition (what do they eat) a. Saprophytes…

Words 1415 - Pages 6

Fake: Cellular Differentiation and Cells Essay

Science Study Notes 2.1 Plant and animal cells 2.2 observing plant and animal cells through a microscope 2.3 the importance of cell division Cell division is important because it is the way healthy body cells are expected to function and aid in the growth of different body parts.. Without cell division the body dies. 2.5 the cell cycle 2.7 cell division gone wrong Cancer cells are cells gone wrong — in other words, they no longer respond to many of the signals…

Words 1324 - Pages 6

8th grade final exam study guide 2015 2 Essay

Assessment on the following Organ Systems: Skeletal System …Functions of the Skeletal System (5 functions) (Power point or Pg. 490) …Compact and Spongy Bone (matching) (Pg. 491-492) Muscular System …Classifications of Muscle Tissue (Power point or Pg. 499) (Cardiac, Smooth, Skeletal) Involuntary-Voluntary _________________________________________________________________________________ …How do the muscular and skeletal systems work together? _________________________________________________________________________________…

Words 424 - Pages 2

How Does Dynamic Exercise Increase Ventilation

vessels are being constricted and causing an increase of the blood pressure. Because there is an increase in vasoconstriction, vasodilation decreases. Because of this, the circulatory system must increase the resistance to push blood through vessels to create flow. With an increase of the blood flow throughout the circulatory system, there is an increased distribution of oxygen to cells as more carbon dioxide is being removed. With all of the other stated physiological changes that dynamic exercise…

Words 593 - Pages 3

Lymphatic System Research Paper

Love Love doesn’t exist he human lymphatic system is one of the most important mechanisms in our bodies and it performs several critical functions. Without it, we would not be able to survive and as such it has evolved to be a crucial component of human longevity on the planet. In fact, most of the animal kingdom’s members all have lymphatic systems and they have developed to perform functions such as removing interstitial fluid from organs and muscles around the body, transporting and absorbing…

Words 411 - Pages 2

Bio Study Guide Essay

BIOL 1030 STUDY NOTES Prokaryotes * Bacteria (no nucleus or membrane bound organelles) * Archaea Eukaryotes * Eukarya (true nucleus and organelles) Autotrophic * Plants (photosynthesis) & some protists (single celled organisms) Heterotrophic * Animals * Fungi Heterotrophic Protists (Protozoans) * No common ancestor * Diplomonads (double celled) * Cilliates (two nuclei)—paramecium * Unikonta * Amoeba * Choanoflagelates (FIRST…

Words 4052 - Pages 17

Finch Lab Essay

Wed 5/12- Work on Dissection Packet – maybe start external structures Thursday 5/13- External structures, Anatomical planes and directions, sexing the pig, skinning the pig Friday 5/20- Muscles, nervous, respiratory, digestive, circulatory Monday 5/17- Urogenital/ excretory Tuesday 5/18- Complete packet & review Wednesday 5/19 – Performance Final & packet due Participation: • EACH member of the lab group is responsible for learning all of the parts. At least 2 people…

Words 3071 - Pages 13

Notes On Chemical Reactions

link below to hear a Science Course Mentor provide an overview to this section, “Chemical Reactions”: http://wgu.connectpro.acrobat.com/p22134881/ Use Chapter 13 and Chapter 15, in Conceptual Integrated Science, to address the below items in your notes: 1. What happens during a chemical reaction? One or more new compounds are formed as a result of the rearagment of atoms. 2. Why is the law of conservation of energy important in chemical reactions? Matter is neither created or destroyed. The atoms…

Words 1602 - Pages 7