Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
9 Cards in this Set
- Front
- Back
What are claws, nails & hoovers made of and who has them?
|
Keratinized structures derived from cells of the epidermis that grow continuously. They typically are on terrestrial mammals.
|
|
What are claws?
|
Sharp-pointed structures that occur at the ends of the digits.
|
|
What type of claws do most mammals have?
|
Nonretractable claws which are fixed in position, but some have retractable claws.
|
|
What is the function of claws?
|
DOS - climbing, digging, defense, increased traction while running, helping to hold or kill prey.
|
|
What are nails? Who has them?
|
Covering of the dorsal surface of the ends of the digits. Humans & other primates.
|
|
Hooved animals are referred to as what? They belong to 2 different orders - what are they?
|
Ungulates. Order Perissodactyla and Artiodactyla.
|
|
What are the differences between Perissodactyla & Artiodactyla?
|
Perissodactyla are odd-toed.
Artiodactyla are even-toed. |
|
Describe the digits of Ungulates.
|
They have a reduced number of digits & stand on the ends of their toes. Most species have only 1 or 2 enlarged toes per foot. The last digit on each toe is covered by a hoof.
|
|
What is the function of hooves.
|
Provide protection to soft tissues of the toes while walking or running.
|