Topic_1_Part_1_Nervous_system_-_Modular

studied byStudied by 0 people
0.0(0)
learn
LearnA personalized and smart learning plan
exam
Practice TestTake a test on your terms and definitions
spaced repetition
Spaced RepetitionScientifically backed study method
heart puzzle
Matching GameHow quick can you match all your cards?
flashcards
FlashcardsStudy terms and definitions

1 / 21

encourage image

There's no tags or description

Looks like no one added any tags here yet for you.

22 Terms

1
Nervous System
The system that receives information, processes it, and coordinates responses; it comprises the central and peripheral nervous systems.
New cards
2
Central Nervous System (CNS)
Consists of the brain and spinal cord; it controls most functions of the body and mind.
New cards
3
Peripheral Nervous System (PNS)
Includes all the nerves outside the CNS; carries messages to and from the CNS.
New cards
4
Neuron
The functional unit of the nervous system specialized for transmitting impulses.
New cards
5
Action Potential
A rapid reversal of membrane potential that propagates along the axon when a neuron is stimulated.
New cards
6
Resting Potential
The electrical potential difference across a neuron's membrane when it is not actively transmitting signals, typically around -70mV.
New cards
7
Synapse
The junction between the axon terminal of one neuron and the receiving cell.
New cards
8
Autonomic Nervous System

Regulates involuntary body functions; consists of the sympathetic and parasympathetic divisions.

New cards
9
Sympathetic Nervous System
Part of the autonomic nervous system that prepares the body for 'fight or flight' response.
New cards
10
Parasympathetic Nervous System
Part of the autonomic nervous system that promotes 'rest and digest', conserving energy and maintaining body functions.
New cards
11
Reflex Arc
The direct route from a sensory neuron to an interneuron and then to a motor neuron, allowing for an automatic response.
New cards
12
Myelin Sheath
An insulating layer surrounding axons, which increases the speed of nerve impulse transmission.
New cards
13
Nodes of Ranvier

Uncovered areas of the axon between myelin sheaths, facilitating rapid signal conduction.—> salatory conduction

New cards
14
Voltage-Gated Sodium Channels
Channels that open during action potential allowing Na+ ions to rush into the neuron.
New cards
15
Depolarization

The process during an action potential whereby the membrane potential becomes less negative due to Na+ influx. more Na inside,

New cards
16
Repolarization

The process that restores the membrane potential to its resting state after depolarization. K channels open, K ions exit the axon, bringing it back to its resting potential(-70mV)

New cards
17
Synaptic Cleft
The gap between the presynaptic neuron and the postsynaptic neuron where neurotransmitters are released.
New cards
18
Neurotransmitter
Chemical messengers that transmit signals across a synapse from one neuron to another.
New cards
19
Acetylcholine
A neurotransmitter involved in muscle activation and the autonomic nervous system functions.
New cards
20
Sensory Neuron
Neurons that carry signals from sensory receptors to the CNS.
New cards
21
Motor Neuron
Neurons that convey impulses from the CNS to effectors (muscles or glands).
New cards
22
Interneuron
Neurons located in the CNS that connect sensory and motor neurons.
New cards

Explore top notes

note Note
studied byStudied by 18 people
899 days ago
5.0(1)
note Note
studied byStudied by 32 people
794 days ago
5.0(1)
note Note
studied byStudied by 1 person
28 days ago
5.0(1)
note Note
studied byStudied by 103 people
856 days ago
5.0(1)
note Note
studied byStudied by 3 people
761 days ago
5.0(1)
note Note
studied byStudied by 10 people
693 days ago
4.5(2)
note Note
studied byStudied by 39 people
953 days ago
5.0(1)
note Note
studied byStudied by 11 people
776 days ago
5.0(1)

Explore top flashcards

flashcards Flashcard (33)
studied byStudied by 3 people
792 days ago
5.0(1)
flashcards Flashcard (62)
studied byStudied by 5 people
765 days ago
5.0(1)
flashcards Flashcard (82)
studied byStudied by 10 people
56 days ago
5.0(1)
flashcards Flashcard (40)
studied byStudied by 5 people
171 days ago
5.0(1)
flashcards Flashcard (20)
studied byStudied by 115 people
507 days ago
5.0(1)
flashcards Flashcard (25)
studied byStudied by 12 people
468 days ago
5.0(1)
flashcards Flashcard (25)
studied byStudied by 2 people
661 days ago
5.0(1)
flashcards Flashcard (38)
studied byStudied by 38 people
8 days ago
5.0(1)
robot