hdhd Flashcards
What is the role of neurons in the nervous system?
Neurons make up the nervous system and are responsible for transmitting signals.
What are stimuli in the context of the nervous system?
Stimuli are changes in the environment that lead to a response.
What is the function of sensory neurons?
Sensory neurons carry messages from sensory organs to the CNS.
What do motor neurons do?
Motor neurons carry messages from the CNS to effectors.
What is the role of interneurons?
Interneurons connect neurons within the CNS.
What are the main parts of a neuron?
Dendrites, soma (cell body), axon, and axon terminals.
Fill in the blank: The CNS consists of the _______ and spinal cord.
brain
What happens at synapses?
Neurotransmitters are released from one neuron to transmit signals to another neuron.
What is the PNS?
The PNS (Peripheral Nervous System) consists of nerves outside the CNS.
What is the function of the cerebellum?
The cerebellum coordinates muscle movements and maintains posture.
What is the role of the hypothalamus?
The hypothalamus regulates hormones and maintains homeostasis.
True or False: Hormones are released from glands and travel to target cells.
True
What are the main endocrine glands mentioned?
Thyroid, pituitary, pancreas, gonads.
Fill in the blank: The _______ lobe is responsible for processing visual information.
occipital
What can happen if the spinal cord is damaged?
It can disrupt communication between the brain and body, affecting sensations and motor functions.
What is the function of the thalamus?
The thalamus acts as a relay station for sensory information.
What is the significance of rapid responses in reflexes?
Reflexes provide a quick response to stimuli to avoid harmful situations.
What are the consequences of disrupted electrical signals in the nervous system?
It can lead to symptoms like weakness and coordination issues.
Fill in the blank: The _______ is covered by the myelin sheath which facilitates electrical signal transmission.
axon
