IB SEHS Core Topics No11 Revision 1.0 to 6.0 N12

Which part of the femur is labelled X in the diagram below?

• Epiphysis

• Articular cartilage

• Diaphysis

• Periosteum

Which of the following describes the anatomical position of the radius?

• On the medial part of the forearm

• On the proximal end of the scapula

• On the lateral part of the forearm

• On the proximal end of the hip

Which three characteristics are found in muscle tissue?

• contractility, extensibility, pivot

• contractility, extensibility, elasticity

• contractility, elasticity, synovial

• contractility, hypertrophy, bursae

What is the correct pathway taken by oxygen during inhalation?

• trachea → pharynx → bronchioles

• larynx → bronchi → pharynx

• pharynx → alveoli → trachea

• trachea → bronchioles → alveoli

What is the definition of residual volume?

• The volume of air breathed in and out in any one breath

• The volume of air in excess of tidal volume that can be exhaled forcibly

• The volume of air still contained in the lungs after a maximal exhalation

• The additional inspired air over and above tidal volume

Which statement(s) outline the role of hemoglobin?

I. To provide a site for oxygen to bind to

II. To transport oxygen in erythrocytes

III. To transport carbon dioxide in leucocytes

• I only

• I and II only

• II and III only

• I, II and III

What is the main function of platelets?

• To combat foreign substances

• To transport carbon dioxide

• To promote blood clotting

• To stimulate contraction of muscle

How is diastolic blood pressure best defined?

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

• The highest pressure in arteries during systole

• The blood pressure flowing into the left ventricle

• The friction between blood cells

What is the relationship between cardiac output, heart rate and stroke volume at rest?

• cardiac output = heart rate – stroke volume

• cardiac output = heart rate × stroke volume

• cardiac output = heart rate + stroke volume

• cardiac output = heart rate ÷ stroke volume

Which of the following is a micronutrient?

• Water

• Protein

• Lipid

• Fibre