Chapter 5 again hopefully this one doesnt delete but it will and i will figure out how.
brain
The mass of nerve tissue that is the main control center of the nervous system
neuron
a nerve cell; the basic building block of the nervous system
reponse
a reaction to a stimulus
Stimulus
a signal to which an organism responds
swim bladder
an air-filled sac near the spinal column in many fishes that helps maintain buoyancy
The is the only mammal that flies.
bat
A brain is a nerve cell with a unique structure for receiving and passing on information.
false
A jellyfish skeleton is made up of fluid-filled cavities surrounded by air.
false
A snail uses a tail and mucus to move on land.
false
An ear is a sense organ that detects stimuli in the form of sight.
false
Animals that live in air might have fins and flippers.
false
Cartilage is less flexible than bone.
false
Echinoderms have a system of fluid-filled tubes known as a swim bladder.
false
Mollusks have spikelike structures among their cells instead of skeletons.
false
Sensory neurons carry response information to organs.
false
When a muscle relaxes, it becomes shorter.
false
The bones in a bat's wings are actually bones.
finger
Animals move to obtain food, defend and protect themselves, maintain , and find mates.
homostatis
A(n) is an electrical message that travels through the nervous system.
impulse
What happens to an arthropod during molting?
it sheds its exoskeleton
Which of these animals has a skeleton without hard parts?
jelly fish
A squid moves through water using propulsion.
jet
muscle
movement
motor neurons
neurons that carry outgoing information from the brain and spinal cord to the muscles and glands
Interneurons
neurons within the brain and spinal cord that communicate internally and intervene between the sensory inputs and motor outputs
A(n) is an animal's reaction to a stimulus.
response`
Eyes and ears are examples of organs.
sense
The odor of baking bread is an example of a(n) .
stimulus
nervous system
the body's speedy, electrochemical communication network, consisting of all the nerve cells of the peripheral and central nervous systems
molting
the process of shedding an outgrown exoskeleton
An impulse is sent through the body as an electrical signal.
true
Blinking in bright light is an example of a response.
true
During molting arthropods shed their skeletons in order to grow.
true
Some insects warm up their flight muscles by vibrating their wings.
true
Some muscles are parts of an organ.
true
Webbed feet are most useful for an animal to move in water.
true
A dragonfly can change direction quickly because it has pairs of wings.
two
cartilage
A connective tissue that is more flexible than bone and that protects the ends of bones and keeps them from rubbing together.
joint
A place in the body where two bones come together
impulse
A sudden, involuntary urge to do something
water vascular system
A system of fluid-filled tubes in an echinoderm's body.
What factor makes it possible for animals with endoskeletons to grow larger than animals with exoskeletons?
Endoskeletons are lighter than exoskeletons.
Which of the following happens at a joint?
Two parts of a skeleton meet.
