Zusammenfassung der Ressource
Frage 1
Frage
What is the primary function of the heart?
Antworten
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To pump blood throughout the body to deliver oxygen and remove waste products
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For gas exchange to remove C02 and deliver 02
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Helps to maintain homeostasis through the release of hormones
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To cause pains in the chest
Frage 2
Frage
What is systemic circulation?
Antworten
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The circulation of fluid within a system
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Deoxygenated blood returning from the body is pumped from the heart to the lungs for gas exchange
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Blood entering the ventricles
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Blood pumped throughout the body to deliver nourishment to all body tissues
Frage 3
Frage
What is pulmonary circulation
Antworten
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Deoxygenated blood returning from the body is pumped from the heart to the lungs for gas exchange
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Blood pumped throughout the body to deliver nourishment to all body tissues
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Blood entering the atria
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Fluid circulating within a system
Frage 4
Frage
What stimulates the heart to contract?
Antworten
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Adrenaline
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An electrical signal
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Noradrenaline
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Serotonin
Frage 5
Frage
The heart has a natural pacemaker. What is it called and where is it located?
Antworten
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Atrioventricular node, floor of the right atrium
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Lymph nodes: Axillary, vcervical, inguinal and thymus
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Sinoatrial node, upper wall of the right atrium
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Internodes, in the stem between nodes
Frage 6
Frage
Label the main components of the cardiac conduction system.
Antworten
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Sinoatrial (SA) node
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Atrioventricular (AV) node
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Atrioventricular (AV) bundle
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Right and left bundle branches
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Purkinje fibres
Frage 7
Frage
Label the diagram below to reflect the path air moves through the respiratory system to reach the alveoli.
Antworten
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Nasal cavity
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Pharynx
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Larynx
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Trachea
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Primary bronchus
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Secondary bronchus
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Tertiary bronchhus
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Terminal bronichioles
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Respiratory bronchioles
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Alveolar ducts
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Alveoli
Frage 8
Frage
What are the main muscles involved in pulmonary ventilation?
Antworten
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Quadriceps and hamstrings
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Diaphragm and intercostal muscles
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Biceps and triceps
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Tibialis anterior and gastrocnemius
Frage 9
Frage
What happens to the intercostal muscles and diaphragm on inspiration?
Antworten
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Intercostal muscles contract to elevate the sternum and rib cage. The diaphragm contracts downward and flattens.
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Nothing. It does not involve muscles contracting.
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Intercostal muscles and diaphragm relax
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The intercostal muscles and diaphragm recoil due to the elasticity of lung tissue
Frage 10
Frage
What happens to the intercostal muscles and diaphragm on expiration?
Antworten
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Nothing, it does not involve muscles relaxing
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Intercostal muscles contract to elevate the sternum and rib cage. The diaphragm contracts downward and flattens
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Intercostal muscles relax causing the rib cage to return to its original position. The diaphragm relaxes and resumes its dome shape.
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The intercostal muscles relax and the diaphragm contracts to form a dome shape.
Frage 11
Frage
What happens when inspiratory muscles contract?
Antworten
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The thoracic cavity increases in length
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The thoracic cavity increases in diameter
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The volume of the thoracic cavity decreases
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The thoracic cavity increases in size and length
Frage 12
Frage
What is the substance that prevents alveoli collapse between breaths by reducing the surface tension of the water film in the alveoli called?
Antworten
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Surfactant
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Reluctant
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Bile
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Interstitial fluid
Frage 13
Frage 14
Frage
What is insulin and what is its main function?
Antworten
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A hormone that stimulates the release of glucose into the bloodstream
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A hormone that reduces gut motility so that absorption of nutrients is slowed
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A hormone that promotes the release of glucogen and suppresses the release of insulin
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A hormone that stimulates the uptake of glucose from the bloodstream by cells therefore lowering the blood glucose level
Frage 15
Frage
What is the role of the pancreas as an endocrine gland?
Antworten
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Secrets digestive enzymes to breakdown proteins, lipids, and carbohydrates
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Enhances the uptake of glucose and conversion into glycogen for storage in the liver
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Secrets hormones to regulate blood glucose such as insulin and glucagon
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Assists in maintaining blood volume
Frage 16
Frage
What is the acceptable range for a fasting blood glucose level?
Antworten
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3.3mmol/L - 6.1mmol/L
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12mmol/L - 18mmol/L
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8.0mmol/L - 12mmol/L
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1mmol/L - 5mmol/L
Frage 17
Frage
What are the receptors that detect elevated blood glucose and where are they located?
Antworten
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Alpha cells located in the pancreas
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Alpha cells located in the heart
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Beta cells located in the pancreas
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Beta cells located in the lungs
Frage 18
Frage
Why is it important to maintain blood glucose levels within normal range?
Antworten
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A low or high blood glucose level can compromise brain function to cause confusion
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Elevated blood glucose levels that do not naturally drop can lead to issues with blood pressure, kidneys, and eyesight
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A low or high blood glucose levels can compromise nerve function that can result in tremors
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All of the above