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WorksheetsIB SEHS - Chapter 2
Total questions: 18
Worksheet time: 9mins
Which of the following is a/are function(s) of the conducting airways?
I. Provide a low resistance pathway for air
II. Remove the moisture from the air
III. Provide defence against harmful chemicals
I only
I and III only
II and III only
I, II and III
What is the definition of inspiratory reserve volume (IRV)?
The volume of air in the lungs after maximal inhalation
The volume of air inspired during normal breathing
The additional inspired air over and above tidal volume
The maximum volume of air that can be inhaled after a maximal exhalation
Which components help to form blood plasma?
water, waste products, platelets
water, dissolved gases, nutrients
erythrocytes, hormones, dissolved gases
leucocytes, electrolytes, nutrients
Which of the following begins intrinsic excitation of the heart?
Sinoatrial node (SA node)
Adrenaline
Chemoreceptors
Parasympathetic nervous system
Which are the units when measuring an athlete’s blood pressure?
ml kg–1 min–1
L min–1
ml min–1
mmHg
An athlete is unable to train for a substantial amount of time following an injury. Which of the following will occur?
A decrease in resting heart rate
A decrease in capillarization around muscle tissue
An increase in arterio-venous oxygen difference
An increase in left ventricular volume
What is the function of the conducting airways?
Cool and moisten the air
High resistance for air flow
Warm and moisten the air
Gaseous exchange
What is vital capacity?
The volume of air in the lungs after maximum inhalation
The volume of air inhaled and exhaled in any one breath
Maximum volume of air that can be exhaled after a maximum inhalation
Additional inspired air over and above tidal volume
What can cause low pH levels in the blood during aerobic exercise?
Increased carbon dioxide content
Increased haemoglobin content
Increased oxygen content
Increased phosphocreatine
What is one function of platelets?
Deliver oxygen
Fight infection
Blood clotting
Antibody storage
Which heart valve is indicated by label X in the diagram?
Bicuspid
Tricuspid
Aortic
Pulmonary
Which combination describes the cardiovascular adaptations from an endurance exercise training programme?
increased stroke volume, increased capillarization, increased blood pressure
increased arterio-venous oxygen difference, increased cardiac output, increased blood pressure
lower resting heart rate, increased capillarization, increased left ventricular volume
lower resting heart rate, increased arterio-venous oxygen difference, increased body temperature
What are the principle structures of the ventilatory system?
nose, pharynx, bronchioles, diaphragm
nose, trachea, bronchioles, alveoli
mouth, larynx, lungs, diaphragm
mouth, trachea, alveoli, ribs
How is the vital capacity of the lungs best defined?
The volume of air inspired and expired at rest
The volume of air which is inspired or expired in one minute
The maximum amount of air that a person can expel from the lungs from a position of full inspiration
The volume of air that can still be expired following normal expiration at rest
What are the major components of blood?
erythrocytes, leucocytes, platelets
plasma, gases, erythrocytes
plasma, hormones, erythrocytes
plasma, water, leucocytes
Which blood vessel directly supplies the heart?
Superior vena cava
Inferior vena cava
Coronary artery
Right pulmonary artery
Where is the electrical impulse in the heart generated?
Bundle of His
Sinoatrial node
Synapse
Atrioventricular node
What best describes diastolic blood pressure?
Force on arterial walls during ventricular relaxation
Force on arterial walls during atrial relaxation
Force on arterial walls during ventricular contraction
Force when the heart pumps blood into the system
