Nervous System - BIO103 student

The system in the body responsible for controlling our experience of the world, directing movements, consciousness, personality, learning, memory, and regulating homeostasis.

Detects stimuli and transmits information from receptors to the CNS.

Initiates and transmits information from the CNS to effectors.

Structural units that send and receive electrical signals and secrete neurotransmitters.

The electrical charge across the plasma membrane of a neuron when it is not being stimulated.

Rapid change in membrane potential that allows neurons to transmit electrical signals.

The part of the nervous system that includes the brain and spinal cord, responsible for receiving and processing information, initiating actions, and coordinating bodily functions.

The network of nerves outside the CNS that transmits signals between the CNS and the rest of the body, controlling voluntary and involuntary movements.

The organ in the CNS that receives sensory information, initiates responses, stores memories, generates thoughts and emotions.

Part of the CNS that conducts signals to and from the brain, controls reflex activities.

Neurons that carry signals from the CNS to control muscle and gland activities.

Neurons that carry signals from sensory organs to the CNS.

Part of the PNS that controls voluntary movements by activating skeletal muscles.

Part of the PNS that controls involuntary responses by influencing organs, glands, and smooth muscles.

Part of the autonomic nervous system that prepares the body for stressful or energetic activities, known as the "fight or flight" response.

Part of the autonomic nervous system dominant during restful times, directing maintenance activities.

The process involving determining stimulus type, signaling intensity, integrating information, and initiating appropriate responses.

A simple behavior pathway where sensory stimulus leads to a predictable motor response.

Actions requiring the convergence of multiple sensory inputs on interneurons to stimulate motor neurons for complex activities.

The largest part of the brain responsible for higher mental functions, sensation, and movement.

K+ diffusing out, makes inside more negative

More positive

Temporary inactivation of Na+ channels

carry sensory information from the body to the central nervous system, allowing us to perceive and respond to stimuli.

neurons carry signals away from CNS to muscles and glands, allowing for motor functions and responses to stimuli.

asociation signals between sensory neurons and motor neurons. They play a crucial role in processing information within the central nervous system.

supportive cells in the nervous system that provide structural support, insulation, and nutrients to neurons. They also play a role in immune defense.

Part of Sensory NS input of internal organs and blood vessels

Part of sSensory NS, sensory input of internal organs and blood vessels

Motor NS, motor output to skeletal muscle

Motor NS, cardiac, smooth, and glands

Motor moves from ___ to ___

sensory moves from to ___

branch-like extensions of a neuron that receive signals from other neurons and transmit them to the cell body. They play a crucial role in communication within the nervous system.

the main part of a neuron that contains the nucleus and other organelles.

long, slender projection of a nerve cell that conducts electrical impulses away from the cell body to other cells. It is covered by a myelin sheath which helps speed up the transmission of signals.

axon terminal, at the end of a neuron's axon that releases neurotransmitters to communicate with other neurons or target cells.

the small gap between neurons where neurotransmitters are released to transmit signals.