module 13 Flashcards
vertebrae
segments of bone or other hard substance that are arranged into a backbone.
notochord
a rod of tough, flexible material that runs the length of a creatures body, providing the majority of its support.
endoskeleton
a skeleton on the inside of a creatures body, typically composed of bone or cartilage.
bone marrow
a soft tissue inside the bone that produces blood cells.
Axial skeleton
the portion of the skeleton that supports and protects the head, neck and trunk.
appendicular skeleton
the portion of the skeleton that attaches to the axial skeleton and has the limbs attached to it.
closed circulatory system
a circulatory system in which the oxygen carrying blood cells never leave the blood vessels
Ateries
blood vessels that carry blood away from the heart.
Capillaries
tiny, thin-walled blood vessels that allow the exchange of gases and nutrients between the blood and the cells of the body.
veins
blood vessels that carry blood back to the heart.
Olfactory lobes
the lobes of the brain that receive signals from the receptors in the nose.
cerebrum
the lobes of the brain that integrate sensory information and coordinate the creatures response to that information.
optic lobes
the lobes of the brain that receive signals from the receptors in the eyes.
cerebellum
the lobe that controls involuntary actions and refines muscle movement.
medulla oblongata
the lobes that coordinate vital functions, such those of the circulatory and respiratory systems, and transport signals from the brain to the spinal cord
internal fertilization
the process by which the male places sperm inside the females body where the eggs are fertilized.
external fertalization
the process by which the female lays eggs and the male fertilizes them once they are outside of the female