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35 Cards in this Set

  • Front
  • Back
glands and tissue that cover interior and exterior body surfaces
epithelial tissue
provides support for the body and connects its parts
connective tissue
transmits nerve impulses throughout the body
nervous tissue
enables the body to move
muscle tissue
t/f: the process by which organisms keep internal conditions relatively constant is called *homeostasis*
true
t/f: cells that transmit nerve impulses are known as *meninges*
fase; neuron
t/f: the long fiber that carries impulses away from the cell body of a nerve cell is the *dendrite*
true
t/f: the lowest level of stimulus needed to activate a neuron is called the *action potential*
false; threshold
t/f: the location at which a neuron can transfer an impulse to another cell is referred to as a *synapse*
true
t/f: the part of the brain that controls voluntary actions is the *brain stem*
false; cerebrum
t/f: the part of the brain that receives impulses from the senses and sends them to the cerebrum is the *hypthalamus*
false; thalamus
t/f: light enters the eye through a small opening called the *pupil*
true
t/f: photoreceptors in the eye that are sensitive to colors are known as *rods*
false; couls
t/f: drugs called *opiates* increase actions controlled by the nervous system
false; stimulates
t/f: an uncontrollable dependence on a drug is known as drug *abuse*
false; addiction
levels of organization in a multicellular organism, smallest to largest
cells, tissues, organs, and organ system
resting potential
the electrical charge across the cell membrane of a neuron in its resting state
function of atuonomic nervous system
regulates activities that are automatic or involuntary
how does alcohol affect the central nervous system?
slows reflex, disrupts coordination, and impairs judgement
type of connective tissue that is replaced by bone as a person grows
cartilage
protein found in hair and nails
haversian
type of canals in bone that contain blood vessels and nerves
keratin
layer of skin where melanocytes are located
epidermis
tough layer of connective tisssue that holds bones together in a joint
periostem
process in which cartilage is replaced by bone
ossification
tough connective tissue that holds bones together in a joint
ligament
protein found in thick muscle filaments
myosin
tough connective tissue that joins skeletal muscle to bone
tendon
layer of skin that contains glands and blood vessels
dermis
dark brown pigment in skin
melanin
place where one bone attaches to another bone
joint
protein found in thin muscle filaments
detin
three different types of muscle tissue
skeletal, smooth, cardial
point at which a motor neuron and a skeletal muscle cell meet
neuromuscual junction
neurotransmitter that transmits impulses to the muscle cell
acetylcholine