Member of class Mammalia, amniotes that have hair and mammary glands
An exocrine gland that secretes milk to nourish the young. Characteristic of mammals
A sheet of muscle that forms the bottom wall of the thoracic cavity in mammals. Cantraction of the diaphragm pulls air into the lungs
A derived characteristic of mammals; a filamentous biomaterial, that grows from follicles found in the dermis
balanced diet rich in fats, sugars, proteins, minerals, and vitamins that mammalian mothers use to nourish their young
Differentiated (heterodont) Teeth
variety of sizes and shapes adapted for chewing many kinds of foods (shearing, crushing, and grinding)
long, sharp tooth (often the longest in mammals) that is used to hold food firmly in the teeth in order to tear it apart. Usually there are 4 (two on top and two on the bottom) They are located next to the incisors
the first four teeth(four on top and four on bottom in humans) in heterodont mammals; adapted to shear foods
Rearmost and most complex teeth; used to grind food (humans have 12- 4 sets of 3)
also know as bicuspids; transitional teeth between canines and molars; functions by crushing and grinding teeth as well as some shearing (both canine and molar functioning)
providing a nurturing and constructive environment that promotes growth and development in offspring
Member of an amniote clade distinguished by a single hole on each side of the skull. (includes mammals)
a hole behind the eye socket on each side of the skull; in humans, the jaw muscules pass through this hole and anchor on the temple.
hammer-shaped small bone or ossicle of the middle ear; it connects to the incus and is attached to the inner surface of the eardrum; transmits sound vibrations from the eardrum to the incus.
stirrup-shapped small boned of the middle ear; attached to the incudostapedial joint to the incus laterally and to the fenestra ovalis, the "oval window", medially; transmits the sound vibrations from the incus to the membrane of the inner ear inside the fenestra ovalis.
The anvil-shaped small bone of the middle ear; connects the malleus and the stapes; transmits sound vibrations from the malleus to the stapes
An egg-laying mammal, such as a platypus or echidna. Like all mammals, monotremes have hair and produce milk, but they lack nipples
mammals with short periods of gestation and prolonged periods of lactation.
(not all marsupials have a marsupium)The maternal pouch of a marsupial that the young complete their embryonic development in
A structure in the pregnant uterus for nourishing a viviparous fetus with the mother's blood supply; formed from the uterine lining and embryonic membranes