Friday, November 22, 2024

Tag Archives: control

Hypertension | Hypotension | Blood Pressure Regulation

#HyperTension #Hypotension #BloodPressureRegulation 1. Normal Systolic and Diastolic Blood Pressures (0:00-0:39) 2. Systolic (SBP) and Diastolic Blood Pressure (DBP); relationship with Cardiac Output (CO) and Total Peripheral Resistance (TPR) respectively. (0:40-1:43) 3. SBP’s direct proportionality with CO. (1:44-6:06) 4. Defining DBP. (6:07-8:57) 5. DBP’s direct proportionality with TPR. (8:58-11:10) 6. Effect of arterioloconstrictors and arteriolodilators on TPR and by extension DBP. Altering SBP by controlling CO. (11:11-13:10) 7. Explanation and calculation of Mean Arterial Pressure (MAP); Mean […]

Read more

Cyclins and CDKs Cell Cycle Regulation

A cell can switch from G0, or cell cycle arrest, to G1 once cells have attained a critical size. For multicellular organisms, growth factors and mitogens, which are substances encouraging cell division, need to be present. For unicellular organisms, nutrients must be adequate in surroundings. Once G1 is initiated, Cyclin D is synthesized and drives the G1/S phase transition. In eukaryotes, Cyclin D binds with CDK 4 and CDK 6. These two complexes can partially phosphorylate retinoblastoma […]

Read more