Nervous System and Neurons

What are the three main parts of a neuron?

• dendrites, cell body (soma), and axon

• spinal cord, cerebellum, and medulla oblongata

• synapse, myelin sheath, and neurotransmitter

• nucleus, mitochondria, and cytoplasm

Explain the function of the nervous system.

• The function of the nervous system is to transmit signals between different parts of the body, allowing for communication and coordination of various bodily functions.

• The function of the nervous system is to digest food

• The function of the nervous system is to produce hormones

• The function of the nervous system is to regulate body temperature

Name the three types of neurons and describe their functions.

• Visual neurons, auditory neurons, and olfactory neurons

• Sensory neurons, motor neurons, and interneurons. Sensory neurons transmit signals from the sensory organs to the central nervous system. Motor neurons transmit signals from the central nervous system to the muscles and glands. Interneurons act as a bridge between sensory and motor neurons, and they are involved in processing and interpreting the signals within the central nervous system.

• Voluntary neurons, involuntary neurons, and reflex neurons

• Long neurons, short neurons, and medium neurons

What are neurotransmitters and how do they function in the nervous system?

• Neurotransmitters are hormones that regulate muscle movement in the nervous system.

• Neurotransmitters function by directly generating electrical signals in the receiving neuron.

• Neurotransmitters are only found in the brain and do not affect the rest of the nervous system.

• Neurotransmitters are chemical messengers that transmit signals across a synapse from one neuron to another. They function by binding to specific receptors on the receiving neuron, leading to changes in the electrical activity of the receiving neuron.

Describe the process of nervous system development in a human embryo.

• Synaptic connections between neurons are not formed during nervous system development

• The nervous system development in a human embryo begins with the formation of the neural tube, which later differentiates into the brain and spinal cord. Neurons and glial cells then proliferate and migrate to their appropriate locations. Synaptic connections between neurons are formed, and the nervous system continues to mature throughout fetal development.

• Neurons and glial cells do not proliferate and migrate to their appropriate locations

• The nervous system development in a human embryo begins with the formation of the digestive system

Tags

NGSS.HS-LS1-4

What is the function of the dendrites in a neuron?

• Protect the neuron from damage

• Produce neurotransmitters

• Store energy for the neuron

• Receive signals from other neurons and transmit them to the cell body.

How do sensory neurons differ from motor neurons?

• Sensory neurons transmit signals from sensory receptors to the central nervous system, while motor neurons transmit signals from the central nervous system to muscles and glands.

• Motor neurons transmit signals from sensory receptors to the central nervous system

• Sensory neurons transmit signals from the central nervous system to muscles and glands

• Sensory neurons transmit signals from muscles to the central nervous system

Explain the role of acetylcholine in the nervous system.

• Acetylcholine has no role in the nervous system

• Acetylcholine is only found in the peripheral nervous system

• Acetylcholine acts as a chemical messenger, transmitting signals across the synapses between nerve cells, and is essential for the proper functioning of the nervous system.

• Acetylcholine is a type of neurotransmitter that inhibits nerve signals

What are the stages of neural development in a fetus?

• Fetal development, embryonic development, adult development

• Synapse formation, neuron maturation, brain development, spinal cord development

• Neurogenesis, cell migration, cell differentiation, synaptogenesis, and neuronal cell death.

• Cell division, cell growth, cell death, cell regeneration

Tags

NGSS.HS-LS1-4

How does the myelin sheath contribute to the function of a neuron?

• It provides structural support for the neuron

• It regulates the release of hormones

• It helps in the conduction of nerve impulses and protects the axon.

• It stores excess neurotransmitters