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1. Anatomy And Physiology
Detailed plan of to include aims and objectives
Explain what is meant by anatomy and physiology
Anatomy is the branch of biology which describes the structure of the body and the relationship of one part to another.
Physiology is the study of how each part functions. Outline the components of the circulatory system, including blood
The essential components of the circulatory system are, the heart, blood and blood vessels, it is means by which food and oxygen are carried around the
body, it includes the pulmonary circulation, the blood travels through the lungs where blood is oxygenated, and the systematic circulation, through the
rest of the body to provide oxygenated blood. (Wikipedia...show more content...
The heart has valves to prevent blood from flowing backs into the heart, there are two types of valves, 1. the atrioventricular valves called the tricuspid
valve and the mitral valve or bicuspid valve.
2. The semilunar valves, the aortic valve and the pulmonary valve.
The SA node sets the pace of the heart, the AV node picks up the signal from the SA node and send it to the AV bundle (bundle of his). The AV bundle
is a strand of that runs through the septum and into the interventricular septum, it splits into the left and right branches in the interventricular septum
until they reach the apex of the heart.
Branching off to the left and the right bundle branches are many of the purkinje fibers that Carry the signal to the walls of the ventricles, causing the
cardiac muscle to contract (systole) and relax (diastole) to pump the blood out of the heart. (Inner body
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2. Anatomy and Physiology Essay
Anatomy and Physiology
The term homeostasis is used to mean maintenance of static or constant conditions in the internal environment in the organism. Essentially all of the
organs and tissues of the body perform functions that help to maintain these constant conditions. For instance, the lungs provide oxygen to the extra
cellular fluid to replenish oxygen that is being used by the cells; the kidneys maintain constant ion concentrations and the gastrointestinal system
provides nutrients.
Not all substances absorbed from the gastrointestinal tract can be used in their absorbed form by the cells. The liver changes the chemical
compositions of many of these substances to more useable forms and...show more content...
A large segment of the nervous system is called the autonomic system. It operates at a subconscious level and controls many functions of the internal
organs, including level of pumping activity by the heart, movements of the gastrointestinal tract, and glandular secretion. Neurons are cells that act like
tiny batteries which power electrical circuits within the body. They can transmit impulses from cell to cell for communication, control, and
interpretation of sensory input.
In a typical neuron dendrites respond to stimuli through input to the neuron cell body. When the stimulus is large enough the cell body sends a one
way electrochemical impulse through the axon to the next neuron or to some effector such as a muscle. The most important part of a neuron is its cell
membrane. Using active transport and special Na+/K+ ion pumps in the membrane of the axon a neuron creates a resting potential of –70 millivolts.
The cell essentially becomes a tiny battery ready for action. The action is the action potential –– a wave of electro–chemical activity which sweeps
down the axon in one direction, changing its polarity. Depolarization leads to further depolarization as special electrically sensitive protein gates
swing open allowing Na+ ions to enter the cell and K+ ions to escape.
Once depolarized the Na+/K+ pumps quickly re–polarize the axon by
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