Urinary system - Wikipedia
The urinary system, also known as the urinary tract or renal system, is a part of the excretory system of vertebrates. In humans and placental mammals, it consists of the kidneys, ureters, bladder, and the …
Hand | Definition, Anatomy, Bones, Diagram, & Facts | Britannica
hand, grasping organ at the end of the forelimb of certain vertebrates that exhibits great mobility and flexibility in the digits and in the whole organ. It is made up of the wrist joint, the carpal bones, the …
Brain | Definition, Parts, Functions, & Facts | Britannica
5 days ago · Brain, the mass of nerve tissue in the anterior end of an organism. The brain integrates sensory information and directs motor responses; in higher vertebrates it is also the center of …
Brain - Wikipedia
Brain ... The brain is an organ that serves as the center of the nervous system in all vertebrate and most invertebrate animals. It consists of nervous tissue and is typically located in the head (cephalization), …
Urinary system - Wikipedia
The urinary system, also known as the urinary tract or renal system, is a part of the excretory system of vertebrates. In humans and placental mammals, it consists of the kidneys, ureters, bladder, and the …
Urinary system - Wikipedia
The urinary system, also known as the urinary tract or renal system, is a part of the excretory system of vertebrates. In humans and placental mammals, it consists of the kidneys, ureters, bladder, and the …
Brain | Definition, Parts, Functions, & Facts | Britannica
5 days ago · Brain, the mass of nerve tissue in the anterior end of an organism. The brain integrates sensory information and directs motor responses; in higher vertebrates it is also the center of …
Brain - Wikipedia
Brain ... The brain is an organ that serves as the center of the nervous system in all vertebrate and most invertebrate animals. It consists of nervous tissue and is typically located in the head (cephalization), …
Hand | Definition, Anatomy, Bones, Diagram, & Facts | Britannica
hand, grasping organ at the end of the forelimb of certain vertebrates that exhibits great mobility and flexibility in the digits and in the whole organ. It is made up of the wrist joint, the carpal bones, the …
Tongue | Description & Facts | Britannica
Feb 4, 2026 · tongue, in most vertebrates, an organ, capable of various muscular movements, located on the floor of the mouth. In some animals (e.g., frogs) it is elongated and adapted to capturing insect …
Tongue | Description & Facts | Britannica
Feb 4, 2026 · tongue, in most vertebrates, an organ, capable of various muscular movements, located on the floor of the mouth. In some animals (e.g., frogs) it is elongated and adapted to capturing insect …
Tongue (disambiguation) - Wikipedia
Look up tongue in Wiktionary, the free dictionary. The tongue is a muscular organ in the mouth of most vertebrate animals. Tongue or Tongues may also refer
Hyaluronic acid - Wikipedia
Hyaluronic acid (HA) is a linear glycosaminoglycan (GAG), an anionic, gel-like, polymer, found in the extracellular matrix of epithelial and connective tissues of vertebrates.
Invertebrates - A-Z Animals
Only the subphylum of Chordata called Vertebrata contains any vertebrate animals. Some invertebrates have a hard exoskeleton, or shell, like snails, crabs, or mussels. The majority have compound eyes …
Invertebrate | Definition, Characteristics, Examples, Groups, & Facts ...
Feb 25, 2026 · invertebrate, any animal that lacks a vertebral column, or backbone, in contrast to the cartilaginous or bony vertebrates. More than 90 percent of all living animal species are invertebrates.
Cardiac muscle - Wikipedia
Cardiac muscle (also called heart muscle or myocardium) is one of three types of vertebrate muscle tissues, the others being skeletal muscle and smooth
HAND Definition & Meaning - Merriam-Webster
The meaning of HAND is the terminal part of the vertebrate forelimb when modified (as in humans) as a grasping organ : the body part at the end of the arm of a human, ape, or monkey.
Hand | Definition, Anatomy, Bones, Diagram, & Facts | Britannica
Hand, grasping organ at the end of the forelimb of certain vertebrates that exhibits great mobility and flexibility in the digits and in the whole organ. It is made up of the wrist joint, the carpal bones, the …
Invertebrate | Definition, Characteristics, Examples, Groups, & Facts ...
Feb 25, 2026 · invertebrate, any animal that lacks a vertebral column, or backbone, in contrast to the cartilaginous or bony vertebrates. More than 90 percent of all living animal species are invertebrates.
Vertebrate - wikidoc
Vertebrata is the largest subphylum of chordates, and contains many familiar groups of large land animals. Vertebrates comprise cyclostomes, bony fish, sharks and rays, amphibians, reptiles, …