B3 Biology Summary Notes
... Humans need to remove waste products from their bodies to keep their internal environment relatively constant. People whose kidneys do not function properly may die because toxic substances accumulate in their blood. Their lives can be saved by using dialysis machines or having a healthy kidney tran ...
... Humans need to remove waste products from their bodies to keep their internal environment relatively constant. People whose kidneys do not function properly may die because toxic substances accumulate in their blood. Their lives can be saved by using dialysis machines or having a healthy kidney tran ...
The Lymphatic System and the Blood
... Hb production begins in basophilic erythroblasts Reticulocytes: lose nucleus, after 1-2 days in circulation lose organelles ...
... Hb production begins in basophilic erythroblasts Reticulocytes: lose nucleus, after 1-2 days in circulation lose organelles ...
METABOLISM
... activity. OR, hormones are chemical messengers. These are secreted by a variety of glands in response to altered conditions in the body. Each hormone travels to one or more specific target tissues or organs, where it elicits a specific response to maintain homeostasis. In general, a gastrointestinal ...
... activity. OR, hormones are chemical messengers. These are secreted by a variety of glands in response to altered conditions in the body. Each hormone travels to one or more specific target tissues or organs, where it elicits a specific response to maintain homeostasis. In general, a gastrointestinal ...
New Unit 3 summary notes - CLRCHS micro-site
... Humans need to remove waste products from their bodies to keep their internal environment relatively constant. People whose kidneys do not function properly may die because toxic substances accumulate in their blood. Their lives can be saved by using dialysis machines or having a healthy kidney tran ...
... Humans need to remove waste products from their bodies to keep their internal environment relatively constant. People whose kidneys do not function properly may die because toxic substances accumulate in their blood. Their lives can be saved by using dialysis machines or having a healthy kidney tran ...
I. Introduction
... 2. A newborn’s first breath is crucial because it has an immediate need for oxygen and to excrete carbon dioxide. 3. The first breath is forceful because the lungs are collapsed and the airways are small. Also, surface tension holds the moist membranes of the lungs together. 4. The metabolic rate of ...
... 2. A newborn’s first breath is crucial because it has an immediate need for oxygen and to excrete carbon dioxide. 3. The first breath is forceful because the lungs are collapsed and the airways are small. Also, surface tension holds the moist membranes of the lungs together. 4. The metabolic rate of ...
Answers to Test Your Knowledge questions for
... All regulation is not lost since the expansion of body fluids triggers control by an elevated urine production rate, which serves the interests of body fluid regulation. This negative feedback control restrains the rise in body fluid level (In practice, as you might expect, body fluids do swell to s ...
... All regulation is not lost since the expansion of body fluids triggers control by an elevated urine production rate, which serves the interests of body fluid regulation. This negative feedback control restrains the rise in body fluid level (In practice, as you might expect, body fluids do swell to s ...
Physiology - Cloudfront.net
... to relay chemical messages through the body. In conjunction with the nervous system, these chemical messages help control physiological processes such as nutrient absorption, growth, etc. ...
... to relay chemical messages through the body. In conjunction with the nervous system, these chemical messages help control physiological processes such as nutrient absorption, growth, etc. ...
homeostasis - TeacherWeb
... • Not a “steady state”, as there is constant monitoring & adjusting ...
... • Not a “steady state”, as there is constant monitoring & adjusting ...
The Human Respiratory System
... 2) Total atmospheric pressure = 760mmHg – Oxygen is 21% of this, therefore = 159mmHg ...
... 2) Total atmospheric pressure = 760mmHg – Oxygen is 21% of this, therefore = 159mmHg ...
1 - Corwith-Wesley-LuVerne High School
... a Organ of Corti contains hearing receptors (hair cells) b Sound is amplified through middle ear c Vibrations set fluids in motion d High pitch stimulate hairs close to oval window e Low pitch stimulate hairs further in f Hairs transfer signals to cochlear nerve to auditory cortex C Mechanism of equ ...
... a Organ of Corti contains hearing receptors (hair cells) b Sound is amplified through middle ear c Vibrations set fluids in motion d High pitch stimulate hairs close to oval window e Low pitch stimulate hairs further in f Hairs transfer signals to cochlear nerve to auditory cortex C Mechanism of equ ...
Overview of Circulation Cardiovascular System Overview
... – Venous squeezing (movement and muscles) – Paristaltic contractions (smooth muscle) – Valves or septa control flow (present in all CV systems) ...
... – Venous squeezing (movement and muscles) – Paristaltic contractions (smooth muscle) – Valves or septa control flow (present in all CV systems) ...
Heart - Constantly Beating Death
... the upper chambers to contract. The signal continues moving down to another cluster of cells above the lower chambers, which then fire. These electrical impulses ebb and flow in regular waves, without the need for direct input from the brain. If needed, however, the brain can directly control heart ...
... the upper chambers to contract. The signal continues moving down to another cluster of cells above the lower chambers, which then fire. These electrical impulses ebb and flow in regular waves, without the need for direct input from the brain. If needed, however, the brain can directly control heart ...
Cardiovascular System
... twisted in appearance. This is most common in the esophagus and veins of the lower limb, although it can occur in any veins. Hemorrhoids are varicose veins in the anal canal. Deeper veins are not as susceptible because surrounding skeletal muscles prevent their walls from stretching. ...
... twisted in appearance. This is most common in the esophagus and veins of the lower limb, although it can occur in any veins. Hemorrhoids are varicose veins in the anal canal. Deeper veins are not as susceptible because surrounding skeletal muscles prevent their walls from stretching. ...
AQA GCSE Biology
... Humans need to remove waste products from their bodies to keep their internal environment relatively constant. People whose kidneys do not function properly may die because toxic substances accumulate in their blood. Their lives can be saved by using dialysis machines or having a healthy kidney tran ...
... Humans need to remove waste products from their bodies to keep their internal environment relatively constant. People whose kidneys do not function properly may die because toxic substances accumulate in their blood. Their lives can be saved by using dialysis machines or having a healthy kidney tran ...
The Respiratory System
... medulla oblongata of brain • Chemical control are sensory receptors in the body that are sensitive to chemical composition of body fluids • Two sets of chemoreceptors sensitive to pH can cause breathing to speed up. Location: medulla oblongata and in the carotid arteries and aortic bodies . These ch ...
... medulla oblongata of brain • Chemical control are sensory receptors in the body that are sensitive to chemical composition of body fluids • Two sets of chemoreceptors sensitive to pH can cause breathing to speed up. Location: medulla oblongata and in the carotid arteries and aortic bodies . These ch ...
Blood Gas Homeostasis Ventilation Diffusion Transport Regulation
... continuously until hemoglobin is as saturated as possible (97.5% at 100 mm of Hg). At the tissue cells hemoglobin rapidly delivers oxygen into the blood plasma and on to the tissue cells. Various factors promote this unloading. An increase in carbon dioxide from the tissue cells into the systemi ...
... continuously until hemoglobin is as saturated as possible (97.5% at 100 mm of Hg). At the tissue cells hemoglobin rapidly delivers oxygen into the blood plasma and on to the tissue cells. Various factors promote this unloading. An increase in carbon dioxide from the tissue cells into the systemi ...
I. Introduction to class
... environment of animal remains fairly constant despite changes in the external environment. Control systems maintain internal conditions within a range in which life’s metabolic activities can occur. Homeostasis is a dynamic state resulting from changes in the outside environment and internal con ...
... environment of animal remains fairly constant despite changes in the external environment. Control systems maintain internal conditions within a range in which life’s metabolic activities can occur. Homeostasis is a dynamic state resulting from changes in the outside environment and internal con ...
Respiratory System
... aorta and carotid arteries which send signals to the medulla – only when oxygen is dangerously low Hyperventilating – breathing real fast – lose too much carbon dioxide too fast, blood becomes a little basic and breathing may stop – breath into a bag to increase carbon dioxide levels ...
... aorta and carotid arteries which send signals to the medulla – only when oxygen is dangerously low Hyperventilating – breathing real fast – lose too much carbon dioxide too fast, blood becomes a little basic and breathing may stop – breath into a bag to increase carbon dioxide levels ...
Maths in Medical Science
... activity & build-up, into normal tissue and to surface fluid Diagrammatic version of the coupled astrocyte network ...
... activity & build-up, into normal tissue and to surface fluid Diagrammatic version of the coupled astrocyte network ...
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 ...
... 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 ...
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.