#TRANSMIT DEFINITION PHYSIOLOGY SKIN#

(2) excitability – the ability of the cell to respond to an electrical impulse

(1) automaticity – the ability to spontaneously generate and discharge an electrical impulse Cardiac cells – two types, electrical and myocardial (``working')Ī) Make up the conduction system of the heartī) Are distributed in an orderly fashion through the heart The vagus nerve is one of this systems nerves, when stimulated slows heart rate and AV conduction.Ī. Parasympathetic nervous system ( or Cholinergic)Ģ. These chemicals increase heart rate, contractibility, automaticity, and AV conductionī. Two chemicals are influenced by the sympathetic system – epinephrine & norepinephrineģ. Sympathetic nervous system (or Adrenergic)Ģ. Nervous system – Heart is supplied by 2 branches of the autonomic nervous systemĪ. Blood supply to the heart is provided by the right and left coronary arteries which arise from the aorta, just above and behind the aortic valve Deoxygenated blood from the body returns to the heart via the superior and inferior vena cava - empties into the right atrium - through the tricuspid valve - into the right ventricle - through the pulmonic valve - into the pulmonary artery - lungs through the pulmonary circulation, contacting alveoli and exchanging gasses - to the pulmonary vein - into the left atrium - through the mitral valve (bicuspid valve) - into the left ventricle - through the aortic valve - into the aorta -then to the capillary beds throughout the whole body for gas exchange.ī.

Circulation – it is important to understand blood flow through the heart in order to understand overall function of the heart and how changes in electrical activity affect peripheral blood flow.Ī. Valves act as one way doors to keep blood moving forward Valves open and close in response to pressure changes in the heartħ. Aortic valve is between the LV & aorta (semilunar valve)Ħ. Pulmonic valve is between the RV & pulmonary artery (semilunar valve)ĥ.

Bicuspid or Mitral valve is between the LA & LV (AV valve)Ĥ. Tricuspid valve is between the RA & RV (AV valve)ģ. RV & LV are the main pumping chambers of the heartĢ. RA & LA are reservoirs for blood being sent to the RV & LVĢ. (A) In front of the ears and just above eye levelĢ5) A patient sustains severe blunt trauma to the left upper abdomen and requires surgery.1. The procedure will be performed on which of the following structures?ġ9) Which of the following is a disorder characterized by uncontrollable episodes of falling asleep during the day?Ģ0) Which of the following is the point at which an impulse is transmitted from one neuron to another neuron?Ģ1) Which of the following controls body temperature, sleep, and appetite?Ģ2) Which of the following cranial nerves is related to the sense of smell?Ģ3) Which of the following is a substance that aids the transmission of nerve impulses to the muscles?Ģ4) Which of the following best describes the location where the carotid pulse can be found? This type of fracture is known as which of the following?ġ7) Which of the following is the large bone found superior to the patella and inferior to the ischium?ġ8) The physician directs the medical assistant to complete a request form for an X-ray study of the fibula.

#TRANSMIT DEFINITION PHYSIOLOGY SKIN#

1) Which of the following terms describes the body's ability to maintain its normal state?Ģ) Which of the following best describes the human body's defense mechanism against environmental bacteria?ģ) Which cells in the blood do not have a nucleus?Ĥ) Which of the following is flexible connective tissue that is attached to bones at the joints?ĥ) Which of the following allows air to pass into the lungs?Ħ) Which of the following is the body cavity that contains the pituitary gland?ħ) Which of the following closes and seals off the lower airway during swallowing?Ĩ) Which of the following is located beneath the diaphragm in the left upper quadrant of the abdominal cavity?ĩ) Which of the following anatomical regions of abdomen lies just distal to the sternum?ġ0) Which of the following cavities are separated by the diaphragm?ġ1) Which of the following terms describes the motion of bending the forearm toward the body?ġ2) In which of the following positions does a patient lie face down?ġ3) If the foot is abducted, it is moved in which direction?ġ4) The anatomic location of the spinal canal isġ5) Which of the following is a structural, fibrous protein found in the dermis?ġ6) A patient has a fracture in which the radius is bent but not displaced, and the skin is intact.

Transmit definition physiology