Circulatory system and chambers in heart of fish
Explain, whether fishes have an open or closed circulatory system? How many chambers are there in heart of the fish and how does blood flow throughout fish body?
Expert
In every vertebrate, including fish the circulatory system is closed, that is, blood flows within the blood vessels.
Fish heart has two consecutive chambers:
a) Thin-walled atrium and
b) Muscular ventricle.
The arterial or the oxygenated blood comes from the gills and gains arteries towards the tissues, and then the venous blood is collected by the veins and reaches atrium of heart passing to ventricle which pumps venous blood in the direction of the gills to become again oxygenated.
Assume the government regulates price of a good to be no lower than some minimum level. Can such a minimum price make producers as a whole worse off? Describe.Since a higher price increases revenue and decreases demand, some of the consumer su
Is there larval stage in the echinoderms?
What cause do governments frequently give to justify the decision to not let price to ration goods? (1.) Price gouging is awful.(2.) Income is distributed unfairly.(3.) Some of the items are necessities and therefore everyone should
Write down the three functions of adrenalin? Briefly state it.
Cost Avoidance: Action taken to decrease future costs, like replacing parts before they fail and cause harm to other parts. The cost avoidance might incur higher (or additional) costs in shortrun however the final or life-cycle cost would be lower.
Give a brief description of cytokinins? Where they made?
Coming from acidic pH environment of stomach which is the pH level does chyme find whenever it enters the duodenum? Why is it essential in order to maintain that paricular pH level in small intestine? Which are the organs responsible for that pH level and how is it ke
Cross-Cultural Communications: The phrase cross-cultural communication explains the ability to effectively form, foster, and enhance relationships with members of a culture distinct from one's own. This is based on knowledge of many factors, like the
Explain, how cell division process is directly related to embryonic growth?
What are the pancreatic tissues included correspondingly in the exocrine and endocrine secretions? What are their respective enzymes and hormones?
18,76,764
1930329 Asked
3,689
Active Tutors
1424066
Questions Answered
Start Excelling in your courses, Ask an Expert and get answers for your homework and assignments!!