9 Week Test 4 Flashcards
Which organ of the excretory system stores urine until the body is ready to eliminate it?
Urinary Bladder
Under normal conditions, which of the following substances is found in urine?
Urea
What function do the kidneys perform?
Remove urea and excess water
The endocrine system acts on the body through chemical products called
Hormones
A change or signal in the environment that can make an organism react is called an
Stimulus
What part of a neuron carries nerve impulses away from the cell body
Axon
A motor neuron sends an impulse to
A muscle or gland
A cell that carries information through your nervous system is a
Neuron
The thick column of nerve tissue that links the brain to most of the nerves in the peripheral nervous system is
Spinal cord
An automatic response is of the body that occurs very rapidly and without conscious control is called a
Reflex
The chemical product of an endocrine gland is called a
Hormone
Gassed pass in and out of a plant through the
Leaves
What part of a plant carries substances between the roots and the leaves
Stem
What is NOT a root function in a plant
Does not produce food.
A flowers female reproductive parts are called
Pistils
Which of these is NOT a function of the cardiovascular system?
Controlling many body processes by means of chemicals
What is the main function of the excretory system?
To collect and remove wastes from the body
The process by which an organisms internal environment is kept stable in spite of changes in the external 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 tissu
Which organ system makes blood cells
Skeletal tissue
Which of the following is NOT a function of the skeleton?
Obtaining oxygen
Much of a newborn baby’s skeleton is made of
Cartilage
What kind of motion is possible with a hinge joint?
Backward or forward
Which type of muscle is found only in the heart
Cardiac muscle
Which of the following is in the correct order from smallest to largest
Cells, tissues, organs, organ systems
Skeletal muscles must work in pairs because
Muscle cells an only contract
How does the skin protect the body from disease
By keeping disease-causing microorganisms from entering the body
Which of the following if the smallest level of organization in the body
Cells
The bones that form the backbone are called
Vertebrae
Which of these is NOT a function of the cardiovascular system
Controlling many body processes by the means of chemicals
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 backwards
Valve
When the 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
Obtaining oxygen
What structure enables 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 part of the body does most chemical digestion take place
Small intestine
What organ produces bile
Liver
The role of the respiratory system is to being what substance into the body
Oxygen
What is the main organ in the respiratory system
Lungs
Definition of egg
A female sex cell
Definition of sperm
The male sex cell
Definition of fertilization
The joining of a sperm and an egg
Definition of reproduction
The process by which living things produce new individuals of the same type
Definition of zygote
A fertilized egg
Definition of chromosome
Carries the information that controls inherited characteristics
