Neuron/nervous System (unit 2 Pt 1)

Question 1

Presynaptic

Answer 1

Sending neuron

Question 2

Post synaptic

Answer 2

Receiving neuron

Question 3

Action potential

Answer 3

An short electrical charge that travels down the axon

Question 4

Synapse

Answer 4

The junction between the axon tip (or terminal buttons) of the sending neuron and the dendrites of the receiving neuron

Question 5

Glial cells

Answer 5

Cells in the nervous system the support and protect neurons and play a part in memory

Question 6

Agonist

Answer 6

A molecule that increases a neurotransmitter’s action

Question 7

Antagonists

Answer 7

Blocks neurotransmitters

Question 8

Myelin sheath

Answer 8

A protective cover on axons that help transmissions go faster

Question 9

Threshold

Answer 9

The level of stimulus required to fire a neuron

Question 10

Neurotransmitters

Answer 10

Chemicals released from sending neurons across the cleft (synapse)

Question 11

Re-uptake

Answer 11

Neurotransmitters being picked back up by the sending neuron

Question 12

Sensory neurons

Answer 12

Afferent neurons that carry messages inward from the skin to the brain+spinal cord

Question 13

Motor neurons

Answer 13

Efferent neurons that carry messages from the CNS outward to the muscles and glands

Question 14

Interneurons

Answer 14

Information that is processed between sensory input and motor output. Happens inside spinal cord+brain

Question 15

Sympathetic nervous system

Answer 15

A division of the autonomic nervous system that arouses the body, mobilizing its energy

Question 16

Parasympathetic

Answer 16

A division of the autonomic nervous system that calms the body conserving its energy

Question 17

Nervous system

Answer 17

The body’s fast electrochemical communication system

Question 18

CNS (central nervous system)

Answer 18

The brain and spinal cord

Question 19

PNS (peripheral nervous system)

Answer 19

The sensory and motor neurons that connect the CNS to the rest of the body

Question 20

Endocrine system

Answer 20

The body’s slow chemical communication through sets of glands that secrete hormones

Question 21

Adrenal glands

Answer 21

A pair of endocrine glands that sit just above the kidney and secrete adrenaline and noradrenaline that help around the body in times of stress

Question 22

Pituitary gland

Answer 22

The endocrine systems most important gland. It’s in the middles of the brain controls by the hypothalamus and it regulates growth and controls other endocrine glands

Question 23

Autonomic nervous system

Answer 23

Controls glands and internal organs.

Question 24

Somatic nervous system

Answer 24

Voluntary control of our skeletal muscles