Question | Answer |
a quick involuntary response to a sensory stimulus (knee jerk) | reflex action |
the bio-electrical signals conducted by nerve cells ar known as | neural impulse |
the ______ nervous system controls involuntary actions and actions of the internal organs | autonomic |
the ______ nervous system is responsible for voluntary movements and the senses | somatic |
conditions or events that cause the body to react are called | stimuli |
the _____ nervous system consists of the brain and the spinal cord | central |
chemical messengers that relay impulses across nerve junctions are called | neurotransmitter |
the ____ nervous system consists of all nerves outside the brain and the spinal cord | peripheral |
the 12 pairs of nerves that emerge directly from the brain are collectively called | cranial nerves |
what kind of actions are controlled by the somatic nervous system? | voluntary |
which nerves carry light impulses from the retina to the brain? | optic nerves |
which nerves carry sound impulses from the inner ear to the brain? | auditory nerves |
name the thick collumn of nervous tissue that connects the brain to all parts of the body | spinal cord |
what kind of actions are controlled by the autonomic nervous system? | involuntary |
which nerves carry smell impulses from receptors in the nose to the brain? | olfactory nerves |
the 31 pairs of nerves that emerge from the spinal cord segments are collectively called: | spinal nerves |
what type of response protects your hand when it touches a hot surface? | reflex |
that part of the brain controls the balace and coordinates body movement? | cerebellum |
the right hemisphere of the brain controls whcih side of the body? | left |
a neuron that carries signals from the brain to the muscles to control movement is called | motor neuron |
a neuron that carries stimuli impulses to the brain or spinal cord is termed as | sensory neuron |
heartbeat,breathing,and digestion are controlled by which nervous system? | autonomic |
what part of the brain controls thought, voluntary movement,language and reasoning? | cerebrum |
the left hemishphere of the brain controls which side of the body? | right |
chemical messengers that relay electrical impulses across a synapse are called | neurotransmitter |
name the tiny gap between nerve fibers where impulses pass from one neuron to another | synapse |
what is the scientific term for a nerve cell-cell that conducts bio-electrical signals | neuron |
neuron that carries stimuli impulses to the brain or spinal cord is termed as: | sensory neuron |
nerve ending that recognizes a stimulus in the environment and converts it into a signal | sensory receptor |
short bushy fibers of a neuron that recieve impulses from other neurons are called | dendrite |
long extension of a nerve call that carries impulses to other neurons,muscles,or glands | axon |
what part of the brain controls hunger,thirst, body temp.,and sleep cycle | hypothalamus |
name the three protective membranes that cover the brain and spinal cord | meninges |
name the part at the top of the spinal cord that controls the body's involuntary actions | brain stem |
what specific part of the brain controls breathing,heart rate, and blood pressure | medulla |
name the large band of neural fibers that connects the two brain hemispheres | corpus callosum |
protective cushion of liquid that circulates in the brain and spinal cord | cerebrospinal fluid |
progressive disease that destroys brain cells and causes muscular tremors and rigidity | parkinson's disease |
brain disorder resulting in gradual loss of memory,reasoning,language& physical functioning | alzheimer's disease |
abnormal growth of brain tissue that can compress and destroy healthy brain tissue | brain tumor |
swelling of the brain due to water retention usually causing unconsciousness | cerebral edema |
injury to the brain caused by sudden impact, usually causing unconsciousness | concussion |
infection & inflammation of the protective membranes covering the brain and spinal cord | meningitis |
central nervous system disorder characterized by loss of consciousness and severe convulsions | epilepsy |
damage to brain tissue due to sudden bleeding or blockage of blood vessels in the head | stroke |
endocrine glands secrete directly into what area of your body | blood stream |
to produce a response, what do hormones bind to on the surface of target cells | receptors |
feedback mechanism that steadily increases hormone levels during stimuli is called | positive feedback |
feedback mechanism that maintains hormone levels within is narrow ranges is called | negative feedback |
diabetes, a common disease, is a disorder of which endocrine gland | pancreas |
An example of a slow-acting hormone is | human growth hormone |
the chemical product of an endocrine gland is called | hormone |
releases hormone that controls the body's reaction to stress (fight-or-flight response) | adrenal gland |
releases testosterone that causes development of male reproductive organs | testis |
releases hormone that affects the wake-sleep patterns and biological rhythms | pineal gland |
releases hormones that regulates basal metabolic rate, oxygen use, and heat production | thyroid gland |
releases hormones including insulin that control the blood sugar level and fat metabolism | pancreas |
releases hormone that controls the amount of calcium in the blood and within the bones | parathyroid gland |
releases estrogens and progesterone that helps developement and functioning of female reproductive system | ovary |
releases hormone that controls growth,blood pressure,and repoductive functions & other glands | pituitary glands |