Week 6 Flashcards
What is stroke volume?
Amount of blood pumped out of each ventricle in a single beat.
Where are the cardiovascular centres and what do they do?
Maintain vasomotor tone - baseline level of activity in sympathetic vasoconstrictor nerves.
What is hypertension?
Chronic increase in systemic arterial blood pressure
Stimulation of baroreceptors helps to regulate blood pressure by causing?
Vasodilation and decrease of cardiac output.
Overview of respiratory system (4)
Lungs
Airways
Chest Wall
Pulmonary Circulation
Blood flow and pressure is regulated by? (2)
Local mechanism (autoregulation) Central mechanisms (neural and endocrine responses)
Basic functions of respiratory system (5)
Gas exchanges Movement of air Protection Produce communication of sound Facilitate odour detection
What is ventilation?
Mechanical movement of air in and out of lungs.
What is respiration?
Exchange or air and carbon dioxide during cellular metabolism.
What is dyspnea?
Difficulty breathing
What is this the pathophysiology of Asthma?
Chronic inflammatory disorder of airways.
Drugs that target the autonomic nervous system?
Cholinergic drugs
Adrenergic drugs
Types of therapy for hypertension?
Healthy lifestyle changes
Thiazide diuretic- decrease blood volume
ACE inhibitors- beta blockers
What do beta blockers do?
Block the receptors
Therapy for acute chronic asthma attack?
Oxygen
Systemic glucocorticoid to reduce airway inflammation.
Short acting drug - salbutamol or albuterol
