Order and Design Test 3 Flashcards
Chapters 1-3
the first section of the small intestine
duodenum
scientific name for windpipe
trachea
largest lymphatic organ
spleen
the type of symmetry in which an organism can be cut into equal halves in only one direction
bilateral symmetry
the structure that exchanges oxygen and nutrients between the blood of an unborn child and his mother
placenta
the dome-shaped muscle that aids in breathing
diaphragm
the organ in which bile is sotred
gallbladder
the primary pigment that causes skin color
melanin
the type of white blood cell that matures in the thymus
B cells
the structure that controls simple reflexes
spinal cord
portion of the body containing most of the vital organs
trunk
plant family that helps restore nitrogen to the soil
pea family
the plant tissue that carries food downward to the stems and roots
phloem
a scientific idea that has survived many experiments and observations without ever being proven false
law
the “master gland”
pituitary gland
a type of leaf with only one blade attached to the petiole
simple leaf
the branch of biology which studies the relationships between organisms in their environments
ecology
air sacs in the lungs
alveoli
a sensible explanation to a scientific problem
hypothesis
the structure that connects bones to muscles
tendon
term referring to the methodical testing of scientific ideas
experimentation
the process through which water in the soil enters a root’s root hairs
osmosis
the cells that carry oxygen through the blood
red blood cells
the term that refers to animals in an environment
fauna
early growth of a seed
germination
the process by which life continues through a new generation of organisms
reproduction
the uniting of a sperm cell and an egg cell
fertilization
the sum of all chemical processes of life
metabolism