Fish - Wikipedia, the free encyclopedia
|
|
A fish is any aquatic vertebrate animal that is typically ectothermic (or cold-blooded), covered with scales, and equipped with two sets of paired fins and several unpaired fins. Fish are abundant i...
en.wikipedia.org/wiki/Fish
|
|
|
Due to the nearness of arteries and veins, heat passes from warmer veins to cooler arteries within the shark's body, rather than dissipating to the cooler environment. This modified circulatory system retains heat in the red muscles.
|
www.seaworld.org/animal-info/info-books/sharks-&-rays/a...
www.seaworld.org/animal-info/info-books/sharks-&-rays/anatomy.htm
|
|
|
|
The shark evolved earlier than most animals with a diferent system. After exiting the stomach, the food enters the duodenum. Then it travels in the valvular intestine. This is the evolutionary difference. ... Excretory system is exactly like a human's...
|
www.smithlifescience.com/ComparativeAnatomy.htm
|
|
|
|
SHARK HEART AND CIRCULATORY SYSTEM ... Sharks have a two-chambered heart, with an atrium (also called the auricle) and a ventricle. The heart is an S-shaped tube that is located in the head region of the shark. ... Heart, Circulatory System...
|
www.enchantedlearning.com/subjects/sharks/anatomy/Heart...
www.enchantedlearning.com/subjects/sharks/anatomy/Heart.shtml
|
|
|
The structures of the excretory system are paired kidneys and ureters from mesomere mesoderm, and an unpaired urinary bladder and urethra. Locate the kidneys on the dorsal part of the abdomen on either side of the vertebral column, embedded in fat.
|
www.zoology.ubc.ca/courses/bio204/lab8_frameset.htm
|
|
The functions of the Excretory System (with emphasis on terrestrial animals, especially mammals) ... Shark Rectal Gland and NaCl Secretion ... Reabsorption of electrolytes and water by the Malpighian tubule system of insects and the mammalian nephron is under hormonal control.
|
www.uic.edu/classes/bios/bios100/lecturesf04am/lect21.h...
www.uic.edu/classes/bios/bios100/lecturesf04am/lect21.htm
|
|
THE EXCRETORY SYSTEM ... Cartilaginous fish have a greater salt concentration than seawater, causing water to move into the shark by osmosis; this water is used for excretion. Freshwater fish must prevent water gain and salt loss. They do not drink water, and have their skin covered by a thin mucus.
|
www.emc.maricopa.edu/faculty/farabee/BIOBK/BioBookEXCRE...
www.emc.maricopa.edu/faculty/farabee/BIOBK/BioBookEXCRET.html
|
|
a. Nephrostome = ciliated opening of tubule into coelom. b. Tubule collects coelomic fluid, transports to lateral nephric duct, which extends caudally and ultimately connects to cloaca. c. ... (1) External - protrudes into coelom. ... d. Tubule may modify fluid by selective reabsorption into peritubular capillaries, eg. glucose,
|
biology.semo.edu/courses/ZO315/Excretory.html
biology.semo.edu/courses/ZO315/Excretory.html
|
|
The Internal Anatomy of a Shark ... The internal anatomy of a shark differs from that of bony fishes. ... One major difference is that all sharks and rays (elasmobranchs) posess a cartilaginous skeleton as opposed to one composed of calcareous bone like that of goldfish, tunas, and most other bony fishes (hence the...
|
www.pelagic.org/biology/int_anatomy.html
|
|
