My stunning padlet by Azryel Allison

Aboral Surface

azryelallison — 2024-03-26 14:55:36 UTC

The "aboral surface" refers to the side or surface of an organism that is opposite to its mouth or oral region. In many animals, particularly those with radial symmetry like starfish or jellyfish, this surface is typically the underside or base of the organism.

Example sentence: The aboral surface of the sea star is covered in tiny tube feet, which it uses for locomotion and gripping onto surfaces.

Phyloric Stomach

azryelallison — 2024-03-27 14:10:02 UTC

The "pyloric stomach" is a section of the stomach found in vertebrates, including humans, located near the pylorus, which is the opening that connects the stomach to the small intestine. It is primarily responsible for grinding food and regulating its passage into the small intestine for further digestion and absorption.

Example sentence: After the food is partially digested in the main stomach chamber, it moves into the pyloric stomach where it undergoes further breakdown before being released into the small intestine for absorption.

Digestive Glands

azryelallison — 2024-03-27 14:10:43 UTC

Digestive glands are specialized organs or structures in the body that produce and release enzymes and other substances necessary for the digestion of food. These glands play a crucial role in breaking down complex nutrients into simpler forms that can be absorbed by the body.

Example sentence: The pancreas and salivary glands are examples of digestive glands that secrete enzymes to aid in the digestion of carbohydrates, proteins, and fats in the digestive system.

Ampullae

azryelallison — 2024-03-27 14:12:26 UTC

"Ampullae" refer to small, bulb-like structures or dilated portions of certain tubular organs, particularly in anatomy. These structures often serve as reservoirs or enlargement points, allowing for the storage or accumulation of fluids.

Example sentence: In the human body, the ampullae of Lorenzini are sensory organs found in the heads of sharks and other cartilaginous fishes, helping them detect electrical fields produced by nearby prey or predators.

Madreporite

azryelallison — 2024-03-27 14:13:12 UTC

A "madreporite" is a small, often calcareous plate found in echinoderms, particularly sea stars and sea urchins. It serves as the entrance to the water vascular system, which is a hydraulic system that aids in locomotion, respiration, and feeding in these organisms.

Example sentence:

The madreporite, located on the aboral surface of the sea star, allows seawater to enter its water vascular system, enabling it to control movement through the contraction and expansion of tube feet.

Bipinnaria

azryelallison — 2024-03-27 14:14:04 UTC

A "bipinnaria" is the larval stage of certain echinoderms, particularly starfish or sea stars, characterized by a bilaterally symmetrical body shape and ciliated bands used for swimming.

Example sentence:

During the bipinnaria stage, the larval starfish exhibits bilateral symmetry and utilizes ciliary bands for locomotion in the water column before undergoing metamorphosis into its adult form.

Skill Gills

azryelallison — 2024-03-27 14:15:12 UTC

"Skin gills" are specialized structures found in certain aquatic organisms, such as amphibians and some fish, that facilitate gas exchange directly through the skin. These gills are composed of thin layers of tissue rich in blood vessels, allowing for the diffusion of gases like oxygen and carbon dioxide between the water and the bloodstream.

Example sentence:

In amphibians like frogs, skin gills play a crucial role in respiration, allowing them to absorb oxygen from the water and release carbon dioxide directly through their skin while submerged.

Cardiac Stomach

azryelallison — 2024-03-27 14:15:55 UTC

The "cardiac stomach" is a section of the stomach found in some animals, particularly in cephalopods like squids and octopuses. It is positioned closest to the mouth and serves primarily to receive food from the esophagus and begin the digestive process.

Example sentence:

In cephalopods, such as squids, the cardiac stomach receives food from the esophagus and initiates digestion by secreting enzymes and acids to break down the ingested prey before it moves into the pyloric stomach for further processing.

Oral Surface

azryelallison — 2024-03-27 14:16:28 UTC

The "oral surface" refers to the side or surface of an organism that contains its mouth or oral opening. It is typically the side where food is ingested and enters the organism's digestive system.

Example sentence:

The sea anemone's oral surface is surrounded by tentacles armed with stinging cells, which it uses to capture and consume prey that ventures too close.

Radial Canals

azryelallison — 2024-03-27 14:17:04 UTC

Radial canals are channels or passages found in the water vascular system of certain marine invertebrates, particularly echinoderms like sea stars and sea urchins. These canals extend from the central ring canal to the tips of the arms in radial symmetry, facilitating the distribution of water and nutrients throughout the organism's body.

Example sentence:

In a sea star, the radial canals branch off from the central ring canal and extend into each arm, allowing for the transport of nutrients and the coordination of movement through the water vascular system.

Radial Nerves

azryelallison — 2024-03-27 14:17:44 UTC

Radial nerves are bundles of nerve fibers that extend outward in a radial pattern from a central point. They are commonly found in organisms with radial symmetry, such as echinoderms like starfish and sea urchins. Radial nerves play a crucial role in coordinating movement and sensation in these animals.

Example sentence:

In starfish, radial nerves run along each arm, facilitating communication between the central nerve ring and the sensory structures located throughout the body, allowing for coordinated movement and response to the environment.

Water Vascular System

azryelallison — 2024-03-27 14:18:19 UTC

The "water vascular system" is a unique hydraulic system found in echinoderms, such as sea stars and sea urchins. It consists of a network of fluid-filled canals and structures that function in locomotion, feeding, and respiration.

Example sentence:

The water vascular system of a sea star enables it to move and feed by using hydraulic pressure to extend and retract its tube feet, allowing for efficient locomotion and grasping of prey.

Ossicles

azryelallison — 2024-03-27 14:18:57 UTC

"Ossicles" are small, calcareous or bony structures found in the endoskeletons of certain marine invertebrates, particularly echinoderms such as sea stars, sea urchins, and brittle stars. These ossicles provide structural support and protection to the organisms.

Example sentence:

The rigid ossicles in the endoskeleton of a sea urchin give it its characteristic spiny appearance and provide protection against predators.

Tube Feet

azryelallison — 2024-03-27 14:19:31 UTC

Tube feet are small, often suction-cup-like structures found in echinoderms such as sea stars, sea urchins, and sea cucumbers. They are part of the water vascular system and are used for locomotion, feeding, and attachment to surfaces.

Example sentence:

Sea stars use their tube feet to slowly crawl across the ocean floor, while also employing them to pry open bivalve shells for feeding.

eye spots

azryelallison — 2024-03-27 14:20:03 UTC

Eye spots, also known as ocelli, are simple light-sensitive organs found in various organisms, particularly those with simple or primitive visual systems. These spots can detect changes in light intensity or direction but do not form detailed images like complex eyes.

Example sentence:

The eye spots on the dorsal side of the planarian allow it to sense changes in light intensity, helping it navigate its environment and avoid potential threats.