Showing posts with label physiology. Show all posts
Showing posts with label physiology. Show all posts

Types of Cerebellar nucleus its connection and function

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There are four main cerebellar nuclei, which are clusters of neurons located in the deep cerebellar white matter. The four nuclei are: The d...

Electrical activity- the action potential of the heart explained

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Cardiac cells can contract without Nervous Stimulation. Cardiac muscle, like skeletal muscle & neurons, is an excitable tissue w...

Ionic basis of action potential of autorrythmic cells

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Phase 1 : Pacemaker Potential: Opening of voltage-gated Sodium channels called Funny channels  (If or f channels ). Closure of voltage...

Physiology and autoregulation of cerebral circulation

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Cerebral circulation  is very important and essential circulation Why because if there is arrest of cerebral circulation for more...

Characteristics of coronary circulation -explained

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Key characteristics of  coronary circulation Coronary circulation is very short , rapid, and  phasic . Blood flow mainly occur during c...

Features of pulmonary and systemic circulation

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Features of pulmonary circulation It is a low pressure system Because it only needs to pump  blood to the top of the lungs. If it is...

Cardiac electrical activity –salient features

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Cardiac cells can contract without Nervous Stimulation Cardiac muscle, like skeletal muscle & neurons, is an excitable tissue wi...

Conduction system of the heart Explained

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The heart has a special conduction system for the following purpose Generating  rhythmical electrical impulses to cause rhythmical con...

Hormones secreted by the pituitary gland

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This include hormone secreted by adenohypophysis (anterior pituitary)and neurohypophysis (posterior pituitary) Hormone secreted by the...

Mechanical events of the cardiac cycle

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The cardiac cycle The cardiac events occur from the beginning of one heart beat to the beginning of next heart beat. It is initiated by s...

Functions of liver and different liver function tests

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Major functions of Liver are the following Blood glucose regulation Synthesis of glycogen Synthesis of triacyl glycerol Synthesis o...

How to measure Jugular venous pulse (JVP)

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Objectives of examination of JVP  Estimation of jugular venous pressure. Assessment of wave forms. Most important bedside test for a...

Origin and spread of cardiac Impulse

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Cardiac impulse originate in SAnode then reach the AV node there is AV nodal delay SAN - AVN -Delay Conduction in the ventricle Depolar...

Blood flow to heart during systole & diastole

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During systole the heart muscle contracts, it compresses the coronary arteries so blood flow is less to the left ventricle during systole ...

The accommodation or near reflex

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Accomodation reflex involve a triad of changes when a person looks at a nearby object. 1. Convergence of eye due to contraction of m...