Nerve Pathways Quiz

Coracobrachialis Muscle Innervation

• The musculocutaneous nerve pierces the coracobrachialis muscle.
• The musculocutaneous nerve is responsible for innervating the coracobrachialis muscle.
• The axillary nerve does not penetrate the coracobrachialis muscle.

pH Meter Functions in Acid-Base Titrations

• The pH meter measures the acidity or alkalinity of a solution during titrations, providing real-time pH readings.
• The voltage generated between the integrated electrodes reflects the hydrogen ion concentration in the solution, which correlates to the pH level.
• A basic rule for recording the titration curve is to plot pH on the y-axis against the volume of titrant on the x-axis.

pH Meter Structure and Components

• The combined glass electrode in a pH meter contains a glass membrane sensitive to hydrogen ions and an internal reference solution.
• The evaluation unit connected to the sensor processes the voltage signal from the electrodes, converting it to a pH value for display.