IB SEHS Core Topics No12 Revision 1.0 to 6.0 M12

Which bone is part of the appendicular skeleton?

• Skull

• Vertebral column

• Humerus

• Sternum

What best describes synovial joints?

• They permit no movement.

• They are freely moveable.

• They are tightly connected by cartilage.

• They permit only slight movement.

What is the name of the skeletal muscle indicated by X?

• Pectoralis

• Trapezius

• Iliopsoas

• Deltoid

What is a basic function of the interior structure of the nose during respiration?

• To provide a passageway for food

• To create friction during breathing

• To warm and moisten incoming air

• To prevent the lungs from collapsing

Which is an example of a blood cell?

I. Leucocyte

II. Platelet

III. Plasma

• I only

• I and II only

• II and III only

• I, II and III

What is the definition of systolic blood pressure?

• The force exerted by blood on arterial walls during ventricular contraction

• The lowest pressure in the arteries during systole

• The blood pressure flowing into the right ventricle

• The friction between blood and the blood vessel walls

Which correctly describes pulmonary circulation?

• left ventricle → pulmonary veins → lungs

• right ventricle → pulmonary arteries → lungs

• right atrium → pulmonary veins → lungs

• left atrium → pulmonary arteries → lungs

Which of the following occurs when an athlete moves from a stationary position to slow running?

• An increase in cardiac output with no change in stroke volume

• No increase in cardiac output but an increase in stroke volume

• No increase in cardiac output and heart rate

• An increase in cardiac output and stroke volume

What causes ventilation to increase during exercise?

• Increased carbon dioxide level

• High pH

• Decreased blood acidity level

• Lower carbon dioxide level

Which statement is correct for an athlete performing the Fosbury Flop high jump technique?

• The centre of mass remains inside the body during flight.

• The centre of mass moves outside the body during flight.

• The centre of mass remains fixed outside the body during flight.

• The centre of mass remains fixed inside the body during flight.