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With funding from the National Science Foundation, Peter Ungar is revealing more details about the lives of human ancestors, and he’s doing it through dentistry. The University of Arkansas anthropologist uses high tech dental scans to find out more about the diets of hominids, a technique that sometimes leads to new and very different conclusions. While anthropologists traditionally determine the diets of our ancestors by examining the size and shape of teeth and jaws, Ungar's powerful microscopes paint a more detailed picture by looking at wear patterns on teeth.
(Source: DCMP)
Discusses how animals use their teeth and horns for protection and survival. From the Kool Books series narrated by Hector Bonilla.
How do braces make teeth straight? They actually just copy the process that the rest of bones naturally undergo. Part of the "Science Out Loud" series.
When scientists attempt to study prehistoric sharks, they typically only find their teeth. Since the teeth are the only fossil records, they are left to imagine what these creatures looked like. In this episode, host Emily Graslie highlights some of the teeth of prehistoric sharks. Part of "The Brain Scoop" series.
Venomous animals have evolved a variety of mechanisms that deliver toxins to would-be predators and prey. Curator Mark Siddall discusses some of the anatomical features these venomous animals have adapted.
The dinosaurs were headed for trouble. They ate nothing but junk food. They never brushed their teeth. They stayed up all night, and they jumped off cliffs even though they could not fly. To avoid extinction, they evolved into birds.
In this behind-the-scenes glimpse into cataloging at The Field Museum, host Emily Graslie learns how to number small skeletal samples in the mammal collection. She also visits the seal fossil collection and examines the differences between the teeth of various species. Part of "The Brain Scoop" series.
Biologists and anthropologists at The Field Museum are studying weaponry to discover the distribution of Central Pacific sharks from more than 100 years ago. Various weapons in the collection have the unique feature of being studded with shark teeth. In this episode, host Emily Graslie discusses the findings and implications from examining the weapons in the collection. Part of "The Brain Scoop" series.
New research reveals why the saber-tooth tiger needed such large teeth.
Uses trilobite fossils as an example to illustrate the challenges scientists face in understanding the prehistoric world and its place in time. Examines fossil sites in Australia, discusses how fossils are formed, and tells how a fossil's world is recreated.
Offers commonsense tips and step-by-step demonstrations on dog care as an alternative to high veterinary bills. Highlights include: toenail maintenance; treating infections and cuts; eye, teeth, and ear care; dry and itchy skin; and dietary considerations. NOTE: Demonstrates how to empty anal glands.
A key moment in the evolutionary saga occurred 200 million years ago, when the ferocious reptile-like animals that roamed the Earth were in the process of evolving into shrew-like mammals. But these reptilian ancestors left their mark on many parts of the human body, including skin, teeth and ears. Part of the “Your Inner Fish” series.
When Genoveva opens her magic book, the screen is filled with feathers, beaks, horns, legs, wings, and snouts. Genoveva's magic book transports her to various habitats where she learns about the animals that live there. It's a reptile, but not a snake. It's from the family of the crocodiles, but it has no teeth. Its head looks like a lizard, and hides it when it's afraid. What animal is Genoveva about to discover, in this episode?
Students learn why fossils are often referred to as "windows to the past." The basic requirements for fossil formation are identified. Examples of various fossils highlight different types of fossil preservation, including petrification, imprints, molds and casts, freezing, amber fossilization, and preservation in tar pits. Finally, various uses of fossils are discussed. Additional terminology and concepts: cement, paleontology, fossil fuels, preserved remains, paleontologist, sediments, and limestone.
Part of the "Branches on the Tree of Life" series. The phylum Chordata includes tunicates, sea lancelets, hagfish, and all familiar vertebrate animals. Explores how these seemingly diverse animals evolved and how the group is unified by four characteristic structures: a hollow dorsal nerve chord, a supportive notochord, gill slits, and a post-anal tail. Key milestones in vertebrate evolution include improvements in swimming and feeding, the evolution of paired fins and a primitive lung, movement onto the land, and the emergence of the amniotic egg.
Tongue taste areas The tongue is a muscular organ in the mouth of most vertebrates that manipulates food for mastication, and is used in the act of swallowing. It is of importance in the digestive system and is the primary organ of taste in the gustatory system. The tongue's upper surface (dorsum) is covered in taste buds housed in numerous lingual papillae. It is sensitive and kept moist by saliva, and is richly supplied with nerves and blood vessels. The tongue also serves as a natural means of cleaning the teeth. A major function of the tongue is the enabling of speech in humans and vocalization in other animals. The human tongue is divided into two parts, an oral part at the front and a pharyngeal part at the back. The left and right sides are also separated along most of its length by a vertical section of fibrous tissue (the lingual septum) that results in a groove, the median sulcus on the tongue's surface. There are two groups of muscles of the tongue. The four intrinsic muscles alter the shape of the tongue and are not attached to bone. The four paired extrinsic muscles change the position of the tongue and are anchored to bone. Do you have good taste? In this video segment, Dr. Linda Bartoshuk explores the sense of taste in humans - why we have it, and what happens when we lose it. Learn why the sense of smell is also important to our experience of food. Footage from NOVA: "Mystery of the Senses: Taste".
(Source: OpenStax)
Showing collections 1 to 2 of 2
Resources to teach younger students about animals
A collection containing 58 resources, curated by DIAGRAM Center
Collection of anatomy resources
A collection containing 21 resources, curated by Benetech
