Nervous System Flashcards
What is ganglia?
Ganglia are the aggregates of cytons or cell bodies of nerve cells from which the nerve fibres may arise or enter into.
What is the singular form of ganglia?
Ganglion
Name the two major divisions of the nervous system.
1.central nervous system(CNS)
2.peripheral nervous system(PNS)
_________________ Includes brain and spinal cord
Central nervous system(CNS)
_________________ include nerves that emerge from and enter into brain and spinal cord
Peripheral nervous system(PNS)
What are the two main subdivisions of PNS?
1.somatic nervous system
2.automatic nervous system
The brain is a very ______________ organ
Delicate
The brain is well protected inside the ___________ or____________ of the skull
Brainbox,cranium
What is the weight of the adult brain?
About 1.35kg
The brain is protected by a covering called______________
Meninges
What are the three coverings of the brain?
1.Dura mater
2.Arachnoid
3. Pia mater
____________is the inflammation of the meninges
Meningitis
The space between the covering membranes is called___________
Cerebrospinal fluid
________fluid acts like a cushion to potect the brain from shocks
Cerebrospinal fluid
What are three main parts of the brain?
1.cerebrum
2.cerebellum
3.medulla oblongata
Which part of the brain is the largest portion?
Cerebrum.
Cerbebrum is divided into tow halves called______________
Cerebral hemispheres
What is the outer portion of cerebrum?
Cortex
What is the inner portion of cerebrum?
Medulla
the higher number of convolutions in human brain is due to ________________
Large number of brain cells
The inner portion of cerebrum consists of ____________matter
White
______________is a sheet of fibres connecting the two cerebral hemispheres.
Corpus callosum
The ____________ is the seat of intelligence consciousness and will power.
Cerebrum
______________ controls all voluntary actions
Cerebrum
Subconscious or unconscious mind is located in the ___________
Cerebrum.
What is the main function of the cerebellum?
1.maintain ‘balance’ of the body
2.coordinate muscular activity
What is the smaller area of brain?
Cerebellum
What is the location of cerebellum?
Cerebellum is located just at the base and under the large cerebrum
What is the lowest part of brain?
Medulla oblongata
What is function of medulla oblongata?
It controls the activities of internal organ
What are the three primary regions of the brain?
1.Forebrain
2.midbrain
3.hindbrain
What are the principles of forebrain?
1.cerebrum
2.diencephalon
Where is midbrain located?
Below corpus callosum
Midbrain connect ________and ________
Brain and spinal cord
____________coordinate muscular activity
Cerebellum
Where is pons located?
Location- centre of brain below the cerebellum
_______carry impulse from one hemisphere of cerebellum to other hemisphere and coordinate muscular movement on both sides of body.
Pons
__________controls activites of internal organ,heart beat,breathing,etc.).
Spinal cord is covered with _______,______and________
Duramater,arachnoid and pia mater
What is the function of spinal cord?
1.reflexes below the neck.
2.conducts sensory impulses from the skin and muscles to the brain.
3.conducts motor responses from the brain to muscles of the trunk and limbs.
What is the full form of PNS?
PNS- Peripheral nervous system
Name two types of PNS.
- Somatic nervous system
2.automatic nervous system
Somatic nervous system consists of two sets of nerves what are they?
1.Cranial nerves
2.spinal nerves
What is the function of hypothalamus?
Controls the body temperature and pituitary.
Which part of brain controls all the involuntary actions
Medulla oblongata
