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Document

... heart attack or stroke – Causes damage to heart, brain, kidneys, and vessels – 2 genes may be responsible  One is a gene for angiotensinogen- powerful vasoconstrictor  The other codes for an enzyme that activates angiotensin – Monitor blood pressure and adopt lifestyle that lowers ...
Blood
Blood

... production • All blood cell production occurs in the red bone marrow, which is found in the: – Axial skeleton – Pelvic and pectoral girdles – Proximal epiphyses of the humeri and femurs. ...
The Excretory System - Discovery Education
The Excretory System - Discovery Education

White Blood Cells
White Blood Cells

... •They take in a gas that your body needs oxygen and get rid of get rid of waste carbon dioxide made by your cells. •You breathe in and out anywhere from 15 to 25 times per minute •They also help in regulating the concentration of hydrogen ion (pH) in your blood. ...
Chapter 21 - Circulatory
Chapter 21 - Circulatory

... Small arteries are too variable in number and location to be given specific individual names. 10 -300 μ diam. Contain up to 25 layers of smooth muscle and little elastic tissue. Arterioles are the smallest of arteries and have only 3 layers of smooth muscle and little tunica externa. Metarterioles – ...
The human body system
The human body system

... to come in and out of your body. When you swallow a small ball of mushed-up food or liquids, a special flap called the epiglottis flops down over the opening of your windpipe to make sure the food enters the esophagus and not the windpipe. ...
Cardiovascular Physiology
Cardiovascular Physiology

... amount and mechanisms able to reestablish normal blood pressure and flow Progressive: Compensatory mechanisms inadequate and positive feedback cycle develops; cycle proceeds to next stage or medical treatment reestablishes adequate blood flow to tissues Irreversible: Leads to death, regardless of me ...
Simple Invertebrates – Chapter 15 – Section 1 (pages 380 – 387) I
Simple Invertebrates – Chapter 15 – Section 1 (pages 380 – 387) I

... 1. allow animals to sense their environment 2. carry messages around the body to control animal’s actions 3. nerve cords are packages of neurons 4. ganglion = a concentrated mass of nerve cells D. Guts (the digestive tract) 1. a pouch lined with cells that release chemicals that break down food into ...
B2-Topic-3-notes - Greenacre Academy Trust
B2-Topic-3-notes - Greenacre Academy Trust

... o To help substances diffuse faster, capillaries have very thin walls (only one cell thick) THE DIGESTIVE SYSTEM Food contains a lot of large insoluble molecules that have to be broken down into small soluble molecules before they can pass into the blood and be used by cells o E.g starch must first ...


... LUNGMARK: a blood test for lung cancer diagnosis We have discovered a group of 6 molecules, known as microRNA biomarkers, circulating in the bloodstream and associated with the presence of the deadliest form of lung cancer (adenocarcinoma; the single biggest cancer killer in the world). These can be ...
6- Arthropoda_AP Bio
6- Arthropoda_AP Bio

... •Cheliceras-fangs-stab and paralyze •Pedipalps- to grab prey •Two body segments •Cephalothorax and abdomen •Almost all have four pairs of walking legs •Book lungs or book gills ...
ANPS 020 Black 03-23
ANPS 020 Black 03-23

... -follows the bronchial tree all the way to the alveoli -gas exchange occurs in the alveoli After oxygenation, blood exits via pulmonary veins -into the left atrium…left ventricle…aorta 2. Bronchial arteries (oxygenated blood) -from branches off the aorta -provides oxygen and nutrients to tissues of ...
Role of buffers in hydrogen ion homeostasis &amp
Role of buffers in hydrogen ion homeostasis &

... • Acid-Base homeostasis involves chemical and physiologic processes responsible for the maintenance of the acidity of body fluids at levels that allow optimal function of the whole individual • The chemical processes represent the first line of defense to an acid or base load and include the extrace ...
Blood & the Cardiovascular System
Blood & the Cardiovascular System

The Task of Transportation
The Task of Transportation

... 4500 species) are alone among living things in being warmblooded, meaning that their internal temperatures are kept constant. This is possible only because their muscles, which generate heat as they contract, are constantly supplied with richly oxygenated blood by their very efficient respiratory an ...
Hemodynamic disturbance
Hemodynamic disturbance

... moves out from the vessel in arteriolar end into interstitial tissue. From interstitial tissue same fluid moves back into vessel at venous end.The small amount of fluid which is left in interstitial space is cleared by lymphatics. ...
Presentation
Presentation

... The large arteries have thick walls of elastic-like tissue that enables them to withstand the blood pressure created by the heart’s beating. ...
Human Body Systems
Human Body Systems

... is its job? Sends immediate and specific info as electrical impulses, control center coordinating all actions and reactions work together and are the bodies 2 systems for control and communication. ...
circulatoryandrespiratorysystemwebquest1
circulatoryandrespiratorysystemwebquest1

... • The body's circulatory system has three distinct parts: Pulmonary circulation, coronary circulation, and systemic circulation.Coronary circulation refers to the movement of blood through the tissues of the heart. Pulmonary Circulation refers to the movement of blood to and from the lungs. Systemi ...
The Circulatory System
The Circulatory System

... Very thin, permeable walls, only one cell thick to allow exchange of materials Very small lumen. Blood cells must distort to pass through. No valves Blood pressure falls in capillaries. Blood changes from oxygenated to deoxygenated (except in lungs) ...
Human Body Systems
Human Body Systems

... Human Organ Systems ● The mouth, pharynx, esophagus, stomach, small and large intestines, and the rectum are all structures within the digestive system. ● The digestive system converts food into simpler molecules that can be used by the cells of the body, absorbs food, and eliminates wastes. ...
life processes
life processes

...  The human circulatory system is made up of the heart, arteries, veins, capillaries and blood.  The heart is a special muscle called as the cardiac muscle having four chambers inside it. The upper two chambers of the heart are called as atria and the lower two chambers are called as ventricles.  ...
Worksheet Mollusks Read book and answer questions
Worksheet Mollusks Read book and answer questions

... In open circulatory systems blood does not always stay in blood vessels Distribute O2 & nutrients while in closed circulatory systems blood always stays in blood vessels 13. Complete the table below about mollusk reproduction: Internal Fertilization External Fertilization Where it takes place Inside ...
MAMMALOGY AS A SCIENCE
MAMMALOGY AS A SCIENCE

... For turtles and lizards, there is not a permanent septum, but there is a muscular ridge in the interior of the ventricle helps separate systemic and pulmonary flows…and with this design they can shunt blood between the two circuits in response to changing conditions Fig. 11-11 on pg283 (PJH) provide ...
Life Processes - 1
Life Processes - 1

... converts it into maltose. Lipase acts on fat and converts it into fatty acids and glycerol. Pancreatic lipase is the main fat digesting enzyme in our body. Q2. Write the importance of photosynthesis to the biosphere. Ans2. Photosynthesis is the only process through which energy enters the biosphere ...
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Homeostasis



Homeostasis or homoeostasis (homeo- + -stasis) is the property of a system in which variables are regulated so that internal conditions remain stable and relatively constant. Examples of homeostasis include the regulation of temperature and the balance between acidity and alkalinity (pH). It is a process that maintains the stability of the human body's internal environment in response to changes in external conditions.The concept was described by French physiologist Claude Bernard in 1865 and the word was coined by Walter Bradford Cannon in 1926. Although the term was originally used to refer to processes within living organisms, it is frequently applied to automatic control systems such as thermostats. Homeostasis requires a sensor to detect changes in the condition to be regulated, an effector mechanism that can vary that condition, and a negative feedback connection between the two.
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