[DOC] [TLE] The Vertebrate Animal Heart: Unevolvable, whether Primitive or ... [PAR] One neglected aspect in the study of evolution is that of anticipation. ... 
Amphibians and reptiles have 3 chambers: 2 atria and a ventricle. ... Hearts are 
very complex--they're not just a bunch of random arteries and veins connecting 
tissue. ... 1) an organ for enriching the hemophlegm (blood) with oxygen (lungs/
gills), 2) a... [DOC] [TLE] 6 Strangest Hearts in the Animal Kingdom - Live Science [PAR] Feb 13, 2015 ... Learn more about animal hearts  from the three-hearted octopus to the ... since 
the organ needs to be powerful enough to pump blood up the ... Mammals and 
birds have four-chambered hearts, but frogs have just three, with two atria and 
one ventricle, said ... Like other mammals, it has four chambers. [DOC] [TLE] Animal Circulatory Systems - Kimball's Biology Pages [PAR] The Fish Heart; The Squid Hearts; Three Chambers: the Frog and Lizard; Four ... 
the blood;; a pump to push the blood through the system;; exchange organs to 
carry out ... The frog heart has 3 chambers: two atria and a single ventricle. ... 
Only the blood passing into the aortic arches has been thoroughly mixed, but 
even so it... [DOC] [TLE] Frogs Have Heart: A Look at a Frog's Circulatory System [PAR] Also covered is a full description of how the frog's three-chambered heart ... It has 
two atria and a single ventricle, making it have a total of three chambers. ... 
Deoxygenated blood is sent to the atrium from various organs in the frog's body ... 
slide 2 of 4 ... one doubt....as frog contains only 3 chambers how can the ventricle 
be... [DOC] [TLE] Anatomy of the Frog - LookD [PAR] Man's internal organs are housed in one of three distinct hollow cavities--the 
chest, the ... There are two upper chambers of the heart, the right atrium and the 
left atrium. The frog heart, however, has only one lower chamber, a single 
ventricle. [DOC] [TLE] Amphibian Circulation  The Frog - CP Biology [PAR] Heart. 2 chambers. 1 atrium. receives DEOXYGENATED blood from body ... 
Blood goes to body organs  SECOND CAPILLARY BED (systemic bed) ... ONE 
ventricle  that means ONE pump; Only ONE PUMP to drive blood through TWO 
capillary beds ... 3 chambered heart allows for the advancement of a double 
circuit. [DOC] [TLE] BJ Life Science 17 reviews/Q.SR Flashcards | Quizlet [PAR] Three Chamber Heart- One chanber collects oxygenated blood from the .... 
between the atrium and ventricles that allows blood to go only one way is a .... (
SR)What organ do sharks not have that most bony fish have? ... (SR)From which 
sense organ in a frog does an auditory nerve carry impulse? ... 2 chamber hearts-
Fish 3... [DOC] [TLE] Re: Why do frogs have three chamber hearts and what is its benefit? [PAR] May 18, 1999 ... Frogs contain a three chambered heart consisting of Two atria and one ventricle 
... a systemic circuit (to all other organs) in a scheme called double circulation. 
Fish have a 2-chambered heart with one atrium and one ventricle. [DOC] [TLE] Cardiovascular System: The Heart and Vessels of Mammals, Birds ... [PAR] As blood circulates through organs such as the liver and kidneys some of these ... 
Mammalian and avian hearts have four chambers  two atria and two ventricles. 
... The three-chambered heart consists of two atria and one ventricle. ... featuring 
helpful articles, tips and online only product specials from Drs. Foster & Smith. [DOC] [TLE] Evolution of the Human Heart into Four Chambers - About Evolution [PAR] 1. Evolution of the Human Heart. 2. Fight or Flight and Evolution. 3 ... The current 
human heart is a large muscular organ with four chambers, a septum, several ... 
The top is called the atrium and the bottom chamber is called the ventricle. It has 
... Frogs evolved to have two atria instead of one, but still only have one ventricle. [DOC]

Question: This organ in frogs has only 3 chambers: 2 atria & 1 ventricle
Answer: heart