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Biological Terms #8
| Question | Answer |
|---|---|
| aortic arch | a primitive heart in invertebrates. it is a tube that connects the dorsal and ventral blood vessels |
| androgen | a hormone secreted by the testis that controls sex characteristics |
| asexual reproduction | the production of offspring that does not involve the union of gametes (sex cells) |
| blastula | a hallow ball of cells formed when a zygote undergoes repeated cycles of cell division |
| urethra | the tube through which uran flows from the uranary bladder of the body |
| cerebrum | the interior portion of the brain where higher brain functions occur |
| cerebellum | the posterior portion of the brain that controls movement and muscle coordination |
| hemocoel | filled space or body cavity in the tissues of some invertebrates |
| Hepatic portal circulation | the system of blood movement through the digestive track and liver |
| integument | the outer covering of an organism |
| limbic system | a group of neurons in the brain that helps regulate emotions |
| melanin | a substance that determines skin color and protects the body from over exposure to sun |
| nictitating membrane | a membrane that covers the eyeball in frogs |
| pheromone | a chemical that is released by an animal that effects the behavior of other animals of the same species |
| rickettsia | a small gram negative of bacteria |
Created by:
kbunkdramaqueen
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