Question

The cells of nervous tissue that generate and transmit action potentials are _____________

Spaces between segments of the myelin sheath are called the __________________

Vesicles containing neurotransmitters in the axon terminals of neurons are called ___________ vesicles.

The fluid-filled space at a synapse through which neurotransmitters diffuse is the synaptic __________________________

The neuron that receives the message is the _______________________ neuron; its plasma membrane contains receptors for neurotransmitters.

The outer 2 mm of the cerebrum that consists of gray matter is the __________________

The most inferior portion of the brainstem is the ________________________________

The innermost of the three meninges covering the brain is the _____________________

The cavities in the brain that contain cerebrospinal fluid are the __________________

The terminal end of the spinal cord is the _________________________

please type it

Answer 1

1. The cells of the nervous tissue that generate and transmit action potentials are

Answer: Neurons

Explanation: The cells that generate and transmit action potential in the nervous tissue is neurons. It is the structural and functional unit of nervous system. The action potential is generated in the axon it helps the neuron to transfer the impulses.

2. Space between the segments of myelin sheath are called the

Answer: Nodes of Ranvier

Explanation: It is also known as myelin sheath gaps which is present in the axon. The main role of the myelin sheath gaps is permit the ions to move in and out in the neuron.

3. Vesicles containing neurotransmitters in the axon terminals of the neuron are called

Answer: Synaptic vesicles

Explanation: Synaptic vesicles is also known as neurotransmitter vesicles. It is present in the terminal part of axon. The main function of the neurotransmitter vesicles is the storage of neurotransmitters and it is delivered at the synapse.

4. The fluid filled space at the synapse through which neurotransmitters diffuse is the synaptic

Answer: Synaptic cleft

Explanation: Synaptic cleft is the separation between the pre synaptic and post synaptic neurons in that region the diffusion of neurotransmitters get occured and the impulse get transmitted from the pre Synaptic neuron to post synaptic neuron.

5. The neurons that recieve message is the

Answer: Dendrites

Explanation: Dendrites are the projections from the cell body of neuron it recieve the information from the other neuron and transfers to cell body. It also contains receptors of neurotransmitters it helps to recieve information from the nearby neurons.

6. The outer 2mm of cerebrum consist of grey matter is the

Answer: Cerebral cortex

Explanation: Cerebral cortex is the outer layer of the cerebrum it is made up of grey matter. It is thin layer with 2 mm of thickness. The cerebral cortex is mainly responsible for awareness, consciousness, intelligence etc.

7.The most inferior portion of the brain stem is the

Answer: Medulla oblongata

Explanation: The brain stem consist of three parts they are Midbrain, Pons and Medulla oblongata.

Superior part - Midbrain

Middle part - Pons

Inferior part - Medulla oblongata

8. The innermost of three meninges covering the brain is the

Answer: Pia mater

Explanation: The brain is covered by three meninges they are Duramater, Arachnoid membrane and Piamater. The Duramater is the outer covering of brain, Arachnoid membrane is the middle layer and Piamater is the innermost layer of brain.

9. The cavities in the brain that contain cerebrospinal fluid are the

Answer: Brain ventricles

Explanation: Ventricles are the cavities present in the brain. There are four cavities present in the brain they are Right lateral ventricle, Left lateral ventricle, Third ventricle and Fourth ventricle. The Cerebrospinal fluid is present in all the cavity. The main functions of the Ventricles is transportation, production and removal of CSF in the brain. Apart from that CSF is present in subarachnoid space of brain that is space between arachnoid membrane and piamater.

10. The terminal end of the spinal cord is the

Answer: Conus medullaris

Explanation: Terminal end of spinal cord is conus medullaris it is also known as conus terminalis. It starts at the level of first and second lumbar vertebrae. The main role of the conus medullaris is to provide stability to the spinal cord.