Cellular Physiology Lec. 3
Dr. Basim A. Al-Ka’abi
MBChB (Medicine)
MSc, PhD (Medical Physiology)
Body fluids:
• TBW, percentage
• ECF and ICF, percentages
Body fluids (cont’d):
• Distribution in different genders and age groups
• Similarity and difference bet. plasma and interstitial fluid
Body fluids (cont’d):
• Electrolyte distribution bet. ICF and ECF
Measurement of BF volumes:
• Characteristics of used substances
• Measurable compartments (TBW, ECF and plasma)
• Unmeasurable compartments (ICF, interstitial fluid)
Simple diffusion:
• “Downhill”
• Molecules’ direction of movement
• Energy?
• Factors determining the rate of diffusion
Facilitated diffusion:
• “Downhill”
• Molecules’ direction of movement
• Energy?
• “Carrier-mediated”
• Example
Good Luck