Already have an account? Get multiple benefits of using own account!
Login in your account..!
Remember me
Don't have an account? Create your account in less than a minutes,
Forgot password? how can I recover my password now!
Enter right registered email to receive password!
Open and Closed Type of Circulatory Systems
There are two categories of circulatory system found in higher metazoans. In one type the original blastocoel carries on to be the main perivisceral space. Either there is no true coelom at all as in pseudocoelomates, or the coelom may be extremely obliterated or reduced and restricted to gonads and excretory organs like in arthropods and most molluscs. In these animals there is no closed network of capillaries connecting the arteries and veins. The arterial blood flows into large spaces or sinuses (or into smaller spaces termed as lacunae), in which various tissues or organs are bathed through blood. From these spaces blood passes into large open veins or by ostia into the heart directly. This is called open type of circulatory system.
In the another type, a system of closed capillaries connect the smaller arteries along with veins, fluid consisting of nutrients filter through the capillary walls into tissue spaces, from which cells in turn derive their nutrients. This is called closed type of circulatory system. This type of circulatory system is found in annelids, cephalopod molluscs and chordates.
FACTORS AFFECTING THE RAPEUTIC RELATIONSHIP: A rapport is developed between the nurse and the patient. Rapport is defined as, a relationship of mutual sympathy and underst
Segmentation in Regenerating Annelids Several worms as they grow continue to add new segments at the posterior end. In these, segmentation takes place in a growth zone located
Antibiotic resistance is the resistance conferred to the host the ability to survive a given antibiotic by the plasmids containing resistance genes. If such kind of plasmid is pre
Concerning the presence of the nucleus what is the difference among animal and bacterial cells? Animal cells (cells of living beings of the kingdom Animalia) have an interior m
Q. What will happen without enough insulin? Without enough insulin two things can happen. Firstly, the cells of the body will be unable to use the glucose in the blood for ener
Chelating agents Oxalates: Only a few plants contain sufficient amounts of sodium and potassium oxalate to be considered toxic. Moreover, ruminants that consume these plants
Explain Absorption and Metabolism of Minerals? All minerals in the diet are not equally absorbed. Also different compounds and complexes of same mineral are absorbed with diffe
What is a glucose tolerance test? A glucose tolerance test, usually conducted in the 24 to 28 weeks of pregnancy measures levels of sugar (glucose) in the mother's blood. Abnor
Q. What is Cardiac tamponade? Cardiac tamponade is that situation where increase in pericardial fluid raises the intrapericardial pressure which interferes with diastolic filli
List the four phases of meiosis I, and briefly explain what occurs during each phase Prophase I: DNA coils into chromosomes, the nucleolus and nuclear envelope disappear, the m
Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!
whatsapp: +1-415-670-9521
Phone: +1-415-670-9521
Email: [email protected]
All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd