Comprehensive Study Notes on Vertebrate Classes and Animal Tissues (copy)

Reptillia

Derived from 'repere' or 'reptum,' meaning 'creep' or 'crawl'; recognized as the first true terrestrial vertebrates.

Herpetology

The scientific study of poikilothermic tetrapods, including both amphibians and reptiles.

Poikilothermic

Refers to cold-blooded animals that cannot regulate their body temperature.

Mesozoic Era

The era during which reptiles flourished, known as the Golden Age of Reptiles.

Cleidoic eggs

Shelled eggs laid by most reptiles that contain a large amount of yolk.

Oviparous

Describes species that lay eggs, as opposed to giving live birth.

Endothermic

Refers to warm-blooded animals, including birds, that maintain body temperature internally.

Ornithology

The study of birds.

Ramphotheca

The structure that covers a bird's beak.

Uropygeal gland

An oily gland found at the base of a bird's tail, used for waterproofing feathers.

Viviparous

Describes mammals that give birth to live young.

Diphyodont

Refers to mammals that have two sets of teeth: milk (deciduous) and permanent teeth.

Thecodont dentition

Teeth structure in mammals where teeth are embedded in the jawbone sockets.

Simple Epithelium

Epithelial tissue consisting of a single layer of cells.

Cuboidal Epithelium

Epithelial tissue comprised of cube-like cells involved in secretion and absorption.

Columnar Epithelium

Epithelial tissue featuring tall, slender cells that are involved in secretion and absorption.

Transitional Epithelium

A type of epithelium found in the urinary bladder that can change its number of layers based on stretching.

Tight Junctions

Structures that prevent substances from leaking across a tissue.

Gap Junctions

Junctions that connect the cytoplasm of adjoining cells, allowing the flow of ions and small molecules.

Histology

The study of tissues and their structure.

Stratified Epithelium

Epithelial tissue consisting of two or more layers of cells, providing protection.

Exocrine glands

Glands that secrete their products into ducts leading to target tissues.

Endocrine glands

Glands that secrete hormones directly into the bloodstream.

Merocrine secretion

A mode of secretion where no cell material is lost, as seen in salivary glands.

Holocrine secretion

A mode of secretion involving the complete disintegration of the cell, as in sebaceous glands.

Stratified keratinized epithelium

Epithelium that provides protection on dry surfaces, containing multiple layers and keratin.

Stratified non-keratinized epithelium

Epithelium found on wet surfaces like the oral cavity and vagina.

Corpora Quadrigemina

The four optic lobes located in the midbrain of mammals.

Metanephric kidneys

The type of kidneys found in reptiles and birds that excrete uric acid.