Nervous System II Flashcards
Involuntary response to a stimulus
Reflex ACT
Conducting pathway of response
Reflect ARC
Components of Reflex
Receptor Afferent neuron (sensory neuron) Interneurons Effector Neuron (motor neuron) Effector Organ
2 Types of Reflex
Somatic Nervous System
Autonomic Nervous System
Often time voluntary
reflexes in the Skeletal Muscles
Somatic Nervous Sytem
Often times involuntary
involves the activity of smooth muscles, heart and glands
Autonomic
T or F
there are 2 types of Autonomic Nervous System?
True
Sympathetic ( fight or flight)
Parasympathetic (rest or digest)
T or F
there are 4 subdivisions of Nervous System
False, only 2
Central Nervous System
Peripheral Nervous System
Integration and Command Center of the Nervous System
CNS
consist of nerves from brain and spinal cord
PNS
2 Organizations of Nervous Tissue
Gray Matter and White Matter
What do you call the spaces of the brain?
Ventricles (3rd and 4th)
T or F
in the BRAIN, gray matter is found in the center while the white matter is found on the outer
False, Spinal Cord yon
T or F
in the Spinal Cord, white matter is found in the outer and gray matter on the center
True
T or F
In the Spinal Cord, gray matter is found in the outer and white matter on the center
False, Brain yon
T or F
In the Brain, white matter is found in the center and gray mater on the outer
True
Cortex of the brain
Nuclei in the brain
Ganglia in the PNS
Gray matter - neurons without myelin sheath
Nerves in the PNS
Nerve tracts in CNS
White Matter- with myelin sheath
3 coverings of Brain and Spinal Cord
Vertebral Column (in Spinal Cord)
Skull and Cranial Nerves ( in Brain)
Meninges
inner membrane covering of Brain and Spinal cord
Meninges
3 layers of Meninges
Dura Matter ( dense fibrous tissue) Arachnoid ( serous membrane) Pia Matter (vascular membrane)
clear, colorless fluid found in ventricles of brain SUBARACHNOID Space and Central Canal
PROTECTIVE CUSHION: Shock Absorber
Cerebrospinal Fluid
pathway for exchange of nutrients
where does CSF forms and drains?
Choroid Plexus in brain
Normal Volume of CSF?
100-200ml
Normal Pressure
70-200mmHg
what do you call the increase pressure or above normal of CSF?
Hydrocephalus
where can you find the 3rd ventricle?
in between the thalamus
elongated, cylindrical part of CNS found in vertebral canal
Spinal Cord
starts from C1 (foramen magnum), end between 1st and 2nd Lumbar
T or F
There are 32 pairs and segment of spinal cord
False, 31 pairs and segment lang
5 parts of Spinal Cord
Cervical- 8 Thoracic-12 Lumbar-5 Sacral-5 Coccyx-1
conical portion of Spinal Cord
Conus Medullaris
thread like strands of pia matter from conus medullaris
Filum Terminale
transparent layer adherent to surface of brain and Spinal cord
Pia matter
carry signals coming from the side and crosses to the other side tapos aakyat
pag may problem sa ____ di na aakyat yung signals
Medulla
Axon Groups in CNS (Ascending tracts)
proprioception of touch, deep pressure
Dorsal Column
Axon Groups in CNS (Ascending tracts)
for light touch, temperature, pain, tickle itch
spinothalamic
Axon Groups in CNS (Ascending tracts)
proprioception of cerebellum
Spinocerebellum
Axon Groups in CNS (Descending tracts) (Direct Edition)
muscle tone, movements in the TRUNK Muscles
Anterior Corticospinal
Axon Groups in CNS (Descending tracts) (Direct Edition)
muscle tone, movements in HANDS
Lateral Corticospinal
Axon Groups in CNS (Descending tracts) (Indirect Edition)
responsible for Posture Balance
Vestibulospinal
Axon Groups in CNS (Descending tracts) (Indirect Edition)
responsible for movement coordination
Rubrospinal
Axon Groups in CNS (Descending tracts) (Indirect Edition)
responsible for posture adjustment during movement
Reticulospinal
Axon Groups in CNS (Descending tracts) (Indirect Edition)
responsible for movement response of Visual Reflex
Tectospinal
Flow of CSF C F 3rd C 4th F M S C Reabsorb by A
Choroid Plexus Foramen of Monro 3rd Ventricle Cerebral Aqueduct 4th Ventricle Foramen of Magendie and Lusheka Subarachnoid Space Central Canal of Spinal Cord Reabsorb by arachnoid Villi