skeleton and muscles
What is cartilage
a connective tissue that is more flexible than bone and protects the ends of bones, to prevent them from rubbing together
What is a neuron
a nerve cell with a unique structure for receiving and transmitting signals
What is a water vascular system
a system of fluid filled tubes
What is a digestive system
an organ system that has specialized structures for obtaining and digesting food
What is a gestation period
The length of time between fertilization and birth
Do humans have an exoskeleton or endoskeleton
endoskeleton
Is hitting snooze on your alarm a stimulus or response
response
What is a swim bladder
an internal, gas filled sac
What does a circulatory system do
transports needed materials to cells and takes away waste
What animal has the longest gestation period
african elephants
What does a skeleton do
A skeleton is a framework that shapes and supports an animal, protects its internal organs, and allows it to move in its environment.
What are interneurons
nerve cells that pass information between neurons
True or false: Animals that live in water, on land, or in air have different adaptations for movement.
true
Complex animals have one of two types of circulatory systems
open or closed
What are the types of reproduction
asexual and sexual
Name the 3 types of skeletons most animals have
skeletons without hard parts, exoskeletons, and endoskeletons
What is a nervous system
organ system that receives information from the environment and coordinates a response
Fins are an example of an adaptation best fit for which of the following:
air, water, or land
water
True or false: Bears are carnivores
false
Name a disadvantage of asexual reproduction
answers may vary
What do muscles do to create movement
contract or relax
What do the most complex nervous systems have
The most complex systems have a nerve cord and a brain.
Which systems work together to make animals move
An animal moves about when its nervous system, muscular system, and skeletal system work together to make movement happen.
Give 3 examples of herbivores
answers may vary
What types of animals do not provide parental care
Most amphibians and reptiles do not provide parental care