Neuroanatomy Flashcards
What is a nerve net?
Neurones in a net system with no central system
What is cephilization?
Formation of a head
Where can nerve nets be found?
Invertebrates
In nerve nets action potentials can travel….
Bidirectionally
What is a nerve ring?
A central nerve ring with radial nerves,that have their own nerve nets. Found in starfish (Echinoderm)
Bilaterally symetrical animals have?
A cluster of neutrons known as a ganglia, and 2 nerve cords running length of body. ( more complex control of muscles)
Why does the brain have sulci and gyri?
Increase packing of the brain into the skull.
What is the forebrain called?
Pasencephalon
What is the telencephalon?
Cerebrum
What is the diencephalon?
Thalamus and hypothalamus
Midbrain is called?
Mesencephalon
Hindbrain is called?
Rhombencephalon
Scientific name of medulla is…
Myelencephalon
Melencephalon is made up of what?
Pons and cerebellum
Frontal lobe is functional area of…
Primary and premotor function
Parietal lobe is functional area of…
Sensory and somatosensory
Occipital lobe is functional area of….
Primary visual and visual association
Temporal lobe is functional area of…
Auditory and auditory association
What is white matter?
Where Myelinated axons reside
What is gray matter?
Where cell bodies reside
Coronal plane is where?
Cuts from ear to ear
Saggital plane cuts where?
From front to back vertically
Horizontal plane cuts from?
Front to back horizontally
Rostral side of an animal?
Front of an animal
Caudal side of an animal?
Tail/ back of animal
The 3 meninges are?
Dura, arachnoid and pia
The dura is….
Outermost strongest layer that connects to the bone
Arachnoid layer ….
Adheres close to the dura, has subarachnoid space- which contains CSF
Pia is….
Deepest layer and is in contact with the CNS
Cerebrospinal fluid is….
A cell free clear liquid produced by the choroid plexuses
Where is CSF produced?
In the choroid plexuses
What connects both hemispheres of the brain?
Corpus callosum
What’s the function of the brain stem?
Serves as a conduit for afferent and efferent information, and controls homeostatic functions
Cerebellum functions?
Refines movement using afferent information by comparing sensory and premotor information
What is the spinal cord?
A two way impulse conduction path way
Where do sensory nerves enter the spine?
They enter the dorsal root ganglion
Where do motor nerves leave the spinal cord?
They leave through the ventral root
Parts of a reflex arc….
Receptor, sensory neurone, integration centre, motor neurone and effector
