Essays Tagged: "Vertebrate"

Vertebrate adaptations for terrestrial Life.

This essay is for my AP-BIO class from actual AP-Biology test noneAP-Biology Essay on vertebrate structural adaptations for terrestrial life. (From an actual past AP-BIOLOGY test)The pro ... of aquatic animals, the circulatory system removes oxygen, and delivers waste carbon dioxide. Land vertebrates have developed a different approach to the problem of gas exchange, as water is not pres ... problem of gas exchange, as water is not present in all of the terrestrial environment. Terrestrial vertebrates have developed lungs to solve this problem. Air enters through the nasal passages, or th ...

(3 pages) 73 0 4.7 Feb/1997

Subjects: Science Essays > Biology

A Journey Through Evolution - The locomotion and behavioral changes of fishes, reptiles, amphibians, birds and mammals. A good starting place for short biology papers.

o amphibians, reptiles, birds, mammals, and finally to human beings.The earth experienced its first vertebrate in the Cambrian times. These vertebrate animals were of two different kinds of fishes, so ...

(8 pages) 91 0 4.1 Apr/2003

Subjects: Science Essays > Biology

The Human Brain

ons the way it does.First, let's begin with what a brain actually is. A brain is the portion of the vertebrate central nervous system that is enclosed within the cranium, continuous with the spinal co ...

(5 pages) 127 0 3.7 May/2004

Subjects: Humanities Essays > Health & Medicine

Circulatory System

Vertebrates have a closed circulatory system. Closed circulatory systems have the blood closed at al ... d is pumped by a heart through vessels, and does not normally fill body cavities. Hemoglobin causes vertebrate blood to turn red in the presence of oxygen; but more importantly hemoglobin molecules in ... d transports fat to the heart.Every life must have a continual supply of energy or it will die. The vertebrate cardiovascular system includes a heart, which is a muscular pump that contracts to propel ...

(2 pages) 85 0 4.5 Oct/2004

Subjects: Science Essays > Biology > Human Biology

Chordates

.The main topic to focus in this lab is the Chordates, which are group of animals that includes the vertebrates under the phylum Chordata. They are united by having a notochord, a hollow dorsal nerve ... they are lost in adulthood. Cephalochordates have a notochord and a nerve cord but no vertebrae. In vertebrates, the notochord has been replaced by a bony vertebrae.The chordates and two sister phyla, ...

(1 pages) 1800 0 0.0 Feb/2006

Subjects: Science Essays

Hormones

diffusion across cell membranes instead of by a blood system. . Among animals, the hormones of the vertebrates--particularly those of humans and other mammals--are the best known. Most vertebrate hor ... are carried to their targets through the bloodstream. Endocrine glands. A major endocrine gland in vertebrates is the pituitary, which consists of two distinct sections: the anterior pituitary (or ad ...

(4 pages) 53 0 5.0 Jul/2006

Subjects: Science Essays > Biology