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An adequate level of pressure is needed in the arteries to keep the blood flowing through the cardiovascular system. The chief determinant of arterial pressure is the volume of blood in the arteries and the important determinants of this are the cardiac output and the peripheral vascular resistance. The resistance offered by the arterioles accounts for almost half the total resistance in the systemic circulation. The muscle in the arterial wall allows them to constrict or dilate. When they constrict, the resistance increases and the blood pressure increases. The vasomotor centre in the medulla when stimulated sends impulses via the sympathetic to the smooth muscle in the arteries, arterioles and veins which results in their constriction.
E. coli DNA has a MW of about 2.7 x 10^9 Daltons. How many meters long is this molecule and what does this tell you about the state of the intracellular DNA? ( The lenght of a sing
Handling : The desire for survival is same whether in animals or human beings. You may be aware of the ability of even tiny animals to scratch and bite. So we won't say any more o
Determine the case when starches treated with heat In the case of starches treated with heat in presence of acid or alkali, the alteration is a minor fragmentation; similarly,
Catalysts are substances that decrease the activation energy of a chemical reaction, facilitating it or making it energetically viable. The catalyst enhances the speed of the chemi
Q. Show Coding for stimulus intensity? Coding for stimulus intensity: If AP's are all-or-none responses that do not vary in amplitude, how does the NS distinguish between stim
Q. What are the hormones that promote the release of the female gamete from the follicle and at which day of the menstrual cycle does this phenomenon happen? What is this event cal
What is the type of digestive system present in beings of the phylum Arthropoda? Are these animals protostomes or deuterostomes? The digestive tube of arthropods is complete, h
Phospholipids exhibit important biological functions. They are: a) increase the rate of fatty acid oxidation b) act as inorganic ion carrier across the membrane c) hel
which is the last enzyme in the thrombotic system?
Haploid Production The higher plants are normally diploid, with two sets of chromosomes in their somatic cells. Their haploids (with one set of chromosomes) arise in nature by
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