Physiology | Senioritis

Mohamed Abbas
August 17, 2023
Physiology

Understanding the Role of LV Transmural Pressure in Determining Afterload and the Workload of the Heart

Why does the LV transmural pressure contribute to afterload? The LV (left ventricle) transmural pressure refers to the pressure difference across the wall of the LV. It...

Mohamed Abbas
August 17, 2023
Physiology

The Role of a Capacitor in the Electrical Equivalent Model of a Cell Membrane

Confusion regarding the role of the capacitor in the electrical equivalent of a membrane The capacitor plays a crucial role in the electrical equivalent of a membrane....

Mohamed Abbas
August 17, 2023
Physiology

The Sliding Filament Theory

If the Z-line is pulled from both sides , how does it move to shorten the sarcomere? When the Z-line is pulled from both sides, the sarcomere,...

Mohamed Abbas
August 17, 2023
Physiology

Understanding the Sleep Phases of Whales

Do whales really sleep “head down”? No, whales do not sleep with their heads down. Whales are mammals, and like all mammals, they need to breathe air...

Mohamed Abbas
August 17, 2023
Physiology

The Role of Calcium and Potassium Ions in Muscle Contraction

Why does hypercalcemia cause muscle weakness, yet hyperkalemia causes muscle excitation? Hypercalcemia refers to high levels of calcium in the blood, while hyperkalemia corresponds to high levels...

Mohamed Abbas
August 17, 2023
Physiology

The Importance of Excreting Excess Nitrogen

Why do animals excrete excess nitrogen instead of recycling it? Animals excrete excess nitrogen rather than recycling it due to several reasons. Firstly, nitrogen is an essential...

Mohamed Abbas
August 17, 2023
Physiology

The Role of Iron Transporters in Efficient Absorption and Utilization of Ferrous Iron

Why is iron transported across membranes in the ferrous form? Iron is transported across membranes in the ferrous (Fe2+) form because it is the most biologically active...

Mohamed Abbas
August 17, 2023
Physiology

Understanding the Effects of Hyperventilation

Why does hyperventilation make you feel like you need to breathe more? Hyperventilation is a condition where a person breathes rapidly and deeply, often faster and deeper...