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Unit 5 - Anatomy and Physiology for Health and Social Care (P5ANDD2UNIT5)
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P5: Homeostasis keep internal body condition constant example: heart rate and body temperature. Homeostasis mechanism are regulating thing like heart rate, level of glucose in bloods, breathing rates and body temperatures. Which maintain the internal envi
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Unit 5 - Anatomy and Physiology for Health and Social Care (P5ANDD2UNIT5)
Institution
PEARSON (PEARSON)
Book
Human Anatomy and Physiology
P5:
Homeostasis keep internal body condition constant example: heart rate and body temperature. Homeostasis mechanism are regulating thing like heart rate, level of glucose in bloods, breathing rates and body temperatures. Which maintain the internal environments by negative feedback which is alway...
Unit 5 - Anatomy and Physiology for Health and Social Care (P5ANDD2UNIT5)
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Homeostasis
P5:
Homeostasis keep internal body condition constant example: heart rate and
body temperature. Homeostasis mechanism are regulating thing like heart
rate, level of glucose in bloods, breathing rates and body temperatures. Which
maintain the internal environments by negative feedback which is always
constants.
When oblivious condition in the body changes the receptor, which are found in
the surface of the skin detect the changes and signals passed to control centre
that process the change. When the changes in the body occur and that
changes are below normal value for the change then the negative feedback
response starts. Then control centre send signal to receptor that then follow
procedure before it returns the conditions back to original example return high
heart rate to calm heart rate.
There are five different part of the body that work toghter to maintain these
conditions which are liver, kidneys hypothalamus, nervous system and
endocrine system all work togethers to keep the condition in the body
constants.
Homeostasis constantly maintain the environment of four main systems
throughout the body. These systems are: heart rate, breathing rate, body
temperature and blood sugar levels
Heart rate: The homeostatic mechanism controls the heart rates in our body.
The autonomic nervous system is the system that regulates the heart rate in
certain conditions example: our body require oxygen, energy and nutrients.
, The circulatory system is made up of blood vessels such as arteries and vessels.
These vessels take oxygenate blood from the heart to the thin-wall capillaries
which is where they exchange oxygen and nutrients takes places and vessels
know as veins return the now deoxygenate blood back to the heart, this is an
ongoing cycle. Nutrient molecules then leave the capillaries to be taken up by
the cells, and waste molecules are transfer off by the cell and then are receive
by the capillaries to be taken away. Capillaries thrive in all parts of the body
and blood is composed into two parts which form elements and plasma. All the
produce elements donate to homeostasis and oxygen is consume cellular
respiration which is a process that provide energy for metabolic activity. The
body fights infection to keep the body unharmed and prevents it from giving
way to disease caused by viruses and bacteria’s. The nutrients require and the
wastes give off by cells are carry in plasma. Nutrients then leave the plasma
through the capillaries and wastes enter the plasma at the capillaries.
Breathing Rate:
When the body breathe in air then oxygen is inhale into the alveoli of the lungs
this is where the exchanges of oxygen and carbon dioxides take place. Blood
inside the pulmonary artery is oxygen-poor and holds a higher concentration of
carbon dioxide. As blood pass through the capillaries close to the alveoli,
oxygen is diffused into the bloods and carbon dioxide then diffuse out of blood
into the alveoli. Then carbon dioxide is exhale by moving from the alveoli to
the nose. As the blood within the pulmonary vein is oxygen-rich and holds a
lower concentration of carbon dioxide.
Carbon dioxide has export for oxygen as blood pass through the lungs. The
respiratory centre found in the medulla which repeatedly releases nerve
impulses to the diaphragm and the muscles of the rib cage. In its relaxed state,
the diaphragm is dome-shape but upon stimulation. It contracts and lowers.
The rib cage move upward and outward and the thoracic cavity increases in
size and air pressure within the expand lungs lowers and is instantly rebalance
by air rushing in through the nose. When the respiratory centre stops sending
out stimulatory nerve impulses, the diaphragm and rib cage return to their
original positions and exhalation occurs. There is chemoreceptor next to the
respiratory centre in the medulla oblongata that are quickly responsive to the
carbon dioxide content of the blood and chemoreceptor in aorta and carotid
arteries that are responsive to both the carbon dioxide content and the water
of the blood. When the carbon dioxide concentrations rise or when the water
lower the respiratory centre has stimulate and the breathing rate increase.
Body Temperature - The body can maintain a normal body temperature of 37°
C even if the external temperature range between 16° C and 54° C. The
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