Integrated Physiology 11/07/25

Respiratory Volumes and Lab Reports

• Focus on respiratory volumes and lung capacities using a sphygmomanometer.

• Lab 8 due after Thanksgiving break. Lab 7 due next week.

• Key topics from Lab 7 relevant for the exam on the 21st.

Hematocrit and Blood Typing

• Hematocrit measures the volume of red blood cells (RBCs) in blood.

• Plasma vs. Serum: Serum lacks clotting factors; plasma requires chelators for preservation.

• Clinical implications of the plasma and serum distinction.

Red Blood Cells

• RBCs (erythrocytes) primarily function to carry oxygen via hemoglobin.

• Erythropoietin: hormone from kidneys that stimulates RBC production; used in doping.

• Key metrics in lab: hematocrit levels and hemoglobin concentration.

Blood Type and Agglutination

• Blood types depend on surface antigens; antibodies develop against nonself antigens.

• Type O is universal donor; AB is universal recipient.

• Rhesus factor (D) crucial in blood typing; affects transfusion compatibility.

• Agglutination can lead to decreased oxygen capacity and potential tissue damage.

Effects of Altitude on Blood

• Higher altitudes increase hematocrit due to lower oxygen availability, enhancing oxygen capacity in blood.

• Observations on paternity using blood type compatibility; agglutination patterns assist in validating parentage.

Quiz Review Topics

• Correction of false statements (e.g., pulmonary circulation does not have high pressure).

• Review key questions regarding renal function, gas exchange, and mechanisms of micturition.

• Importance of understanding the physiological response to dehydration and fluid balance management in the body.