IB SEHS

What structure is labelled X in the diagram below?

• Articular capsule

• Synovial fluid

• Articular cartilage

• Synovial membrane

Which structure forms part of a long bone?

• Bursae

• Articular capsule

• Meniscus

• Articular cartilage

Which is a physiological cause of peripheral fatigue in high-intensity exercise?

• Reduction in muscle glycogen reserves

• Depletion of acetylcholine

• Depletion in creatine phosphate

• Reduction in Ca2+ release

Which of the following would be considered an indication of peripheral fatigue?

• An increase in creatine phosphate stores due to training

• A reduction in a person’s vertical jump height after repeated trials

• A reduction in the levels of lactate and hydrogen ions in the blood

• An increase in calcium ion availability for release

Which of the activities are correctly classified in terms of their exercise intensity?

• A

• B

• C

• D

Which represents the predominant phase of restoration of muscle creatine phosphate stores?

• A

• B

• C

• D

What is a cause of peripheral fatigue for an athlete completing a 100 m sprint?

• Depletion of muscle and liver glycogen

• Depletion of creatine phosphate and ATP

• Reduction of Ca²⁺ release

• Dehydration

What are the principal structures of the ventilatory system?

• Mouth, trachea, ribs, intercostal muscles

• Nose, pharynx, aorta, diaphragm

• Nose, trachea, bronchioles, alveoli

• Mouth, larynx, diaphragm, lungs

Which structure forms part of a long bone?

• Bursae

• Articular capsule

• Meniscus

• Articular cartilage

Which is a physiological cause of peripheral fatigue in high-intensity exercise?

• Reduction in muscle glycogen reserves

• Depletion of acetylcholine

• Depletion in creatine phosphate

• Reduction in Ca2+ release