Brain Anatomy 1

Question 1

What are the names of the two parts of the nervous system?

Answer 1

Central Nervous system (CNS) and Peripheral Nervous system (PNS)

Question 2

Which neurons is the Central Nervous System responsible for?

Answer 2

Interneurons->Neurons with local axons
Projection neurons->axon of cell go outside

Question 3

Which neurons is the Peripheral Nervous System responsible for?

Answer 3

Motor neurons->axons are efferent fibers,outputs
Sensory neurons->axons are afferent fibers, inputs

Question 4

What are the three meninges?

Answer 4

Dura mater->outer layer,though
Arachnoid membrane->Middle layer, soft and spongy
Pia mater->closest to brain, full of vessels

Question 5

Where is located the subarachnoid space and what is it filled with?

Answer 5

It is located between arachnoid membrane and the pia mater and it is filled with cerebrospinal fluid (CSF) and blood vessels

Question 6

What are the two parts of the pheripheral nervous system?

Answer 6

Somatic nervous system->interact with external environment
Automatic nervous system->body internal environment

Question 7

What are the types of nerves and their fonction in the Somatic nervous system?

Answer 7

Afferent nerves->sensory signals from senses to CNS
Efferent nerves->motor signals from CNS to skeletal muscles

Question 8

What are the types of nerves and their fonction in the Automatic nervous system?

Answer 8

Afferent nerves->sensory signals from internal organs to CNS
Efferent nerves->motor signals from CNS to internal organs

Question 9

What are the two divisions in the Automatic nervous system?

Answer 9

Sympathetic division->automatic system/fight or flight
Parasympathetic division->relaxed state/feed and breed/rest and digest