4th Nine Weeks Test Flashcards
Needed substances are carried to the body cells by
Blood
Blood vessels that carry blood away from the heart are called
Arteries
Which component of blood carries oxygen to the body cells
Red blood cells
Which of these heart structures prevents blood from flowing backward
Valve
When ventricles contract, blood is pumped
Out of the heart
The function of white blood cells is to
Fight disease
Which of the following is NOT a function of the digestive system
Obtain oxygen
What structures enable the small intestine to absorb large amounts of nutrients
Villi
What substance in the mouth contains an enzyme that begins chemical digestion
Saliva
What process involves muscle contractions that move food through the esophagus
Peristalsis
In what pet of the body does most chemical digestion take place
Small intestine
What organ produces bile
Liver
The role of the respiratory system is to bring what substance into the body
Oxygen
What is the main organ in the respiratory system
Lungs
What is the main function of the excretory system
To collect and remove wastes from the body
Which organ of the excretory system stores urine until the body is ready to eliminate it
Urinary bladder
Under normal conditions, what is found in urine
Urea
What function do the kidneys perform
Remove urea and excess water
What is not a function of the cardiovascular system
Controlling many body processes by means of chemicals
The endocrine system ask on the body through chemical products called
Hormones
A change or signal in the environment that can make an organism react is called
Stimulus
What part of a neuron carries nerve impulses away from the cell body
Exxon
Gases pass in and out of a plant through
Leaves
What part of a plant carries substances between the roots and the leaves
Stem
What is not a route function in a plant
Produce food
A flowers female reproductive parts are called
Pistils
A motor neuron sends an impulse
A muscle or gland
A cell that carries information through your nervous system is
Neuron
The sick column of nerve tissue that links the brain to most of the nerves in the peripheral nervous system is the
Spinal cord
An automatic response of the body that occurs very rapidly and without conscious control is called
Reflects
The chemical product of an endocrine gland is called
Hormone
The process by which an organism’s internal environment is kept stable in spite of changes in the Extertal environment is called
Homeostasis
What structure directs the activities of a cell
Nucleus
Messages are carried back and forth between the brain and other parts of the body by
Nervous tissue
What organ system makes blood cells
Skeletal system
Which of the following is not a function of the skeleton
Obtaining oxygen
Much of a newborn babies skeleton is made of
Cartilage
What kind of motion is possible with a hinge joint
Forward and backward
Which type of muscle is found only in the heart
Cardiac muscle
List the levels of organization from smallest to largest
Cells, tissue, organs, organ system
Skeletal muscles must work in pairs because
Muscle cells can only contract
How does the skin protect the body from disease
By keeping disease causing microorganisms from entering the body
What is the smallest level of organization in the body
Cells
The bones that form the backbone are called
Vertebrae
Egg
The female sex cell
Sperm
The male sex cell
Fertilization
The joining of a sperm and an egg
Reproduction
The process by which living things produce new individuals of the same type
Zygote
A fertilized egg
Chromosome
Carries the information that controls inherited characteristics
