basic medical quiz

1. Which structure is located at the level of the sternal angle (Angle of Louis)?

• Bifurcation of the trachea

• Origin of the aorta

• Beginning of inferior vena cava

• Apex of the heart

2. The phrenic nerve supplies which of the following?

• Intercostal muscles

• Pleurae of lungs

• Diaphragm

• Trapezius muscle

Which of the following arteries supplies blood to the pericardium?

• Internal thoracic artery

• Thoracoacromial artery

• Subclavian artery

• Axillary artery

Which heart chamber forms the apex of the heart?

• Left Atrium

• Right ventricle

• Left ventricle

• Right Atrium

Which muscle is responsible for the abduction of the arm from 0 to 15 degrees?

• Deltoid

• Supraspinatus

• Teres minor

• Infraspinatus

The primary stimulus for breathing under normal conditions is:

• High oxygen concentration

• High carbon dioxide concentration

• Low blood pH

• Low carbon dioxide concentration

Which amino acid is the precursor for the neurotransmitter serotonin?

• Tyrosine

• Tryptophan

• Glycine

• Cysteine

Which enzyme is the rate-limiting step in glycolysis?

• Hexokinase

• Pyruvate kinase

• Phosphofructokinase-1

• Glucose-6-phosphatase