NEURONS, BRAIN STRUCTURES, AND MENINGES: KEY
NEUROANATOMY CONCEPTS |THE SMART WAY TO PASS |
REAL TESTS, REAL RESULTS!
Axon Answer: long neuron process that carries impulses away from the cell body.
Axon hillock Answer: cone-shaped region where nerve impulses begin.
Axon terminal Answer: end of an axon that releases neurotransmitters.
Cell body (soma) Answer: main part of a neuron containing the nucleus and organelles.
Dendrite Answer: branched neuron process that receives signals.
Mitochondria Answer: organelles that produce ATP energy for the cell.
Nissl bodies Answer: rough ER in neurons that helps make proteins.
Node of Ranvier Answer: gap in myelin sheath where impulses jump during conduction.
Nucleus Answer: the control center of the cell that contains DNA.
Schwann cell Answer: cell that forms myelin around peripheral nerve axons.
Right cerebral hemisphere Answer: right half of the cerebrum, involved in sensory, motor, and
higher brain functions.
Left cerebral hemisphere Answer: left half of the cerebrum, involved in sensory, motor, and
higher brain functions.
Gyri Answer: raised folds on the surface of the cerebrum.
Sulci Answer: shallow grooves between gyri on the brain surface.
White matter Answer: pale nervous tissue made mostly of myelinated axons. It carries signals
between brain and spinal cord areas.
Gray matter Answer: darker nervous tissue made mostly of neuron cell bodies, dendrites, and
synapses. It processes information.
Arachnoid mater Answer: middle meningeal layer with a web-like appearance.
Dura mater Answer: tough outer meningeal layer that protects the brain and spinal cord.
Pia mater Answer: delicate inner meningeal layer that clings to the brain and spinal cord.
Cerebral aqueduct Answer: narrow passage connecting the third and fourth ventricles.
Choroid plexus Answer: tissue in ventricles that produces cerebrospinal fluid.
Fourth ventricle Answer: CSF-filled cavity between the brainstem and cerebellum.
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, Interventricular foramina Answer: passages connecting lateral ventricles to the third ventricle.
Lateral ventricle Answer: paired CSF-filled spaces in the cerebral hemispheres.
Septum pellucidum Answer: thin membrane separating the lateral ventricles.
Superior sagittal sinus Answer: dural venous channel along the top midline of the brain.
Third ventricle Answer: CSF-filled cavity in the diencephalon.
Frontal lobe Answer: brain lobe involved in voluntary movement, planning, personality, and
speech production.
Insula Answer: cerebral lobe deep within the lateral sulcus involved in taste, visceral sensation,
and emotion.
Occipital lobe Answer: brain lobe that processes vision.
Parietal lobe Answer: brain lobe involved in touch, body position, and spatial awareness.
Temporal lobe Answer: brain lobe involved in hearing, memory, and language comprehension.
Central sulcus Answer: groove separating the frontal and parietal lobes.
Superior colliculi Answer: midbrain structures involved in visual reflexes.
Inferior colliculi Answer: midbrain structures involved in auditory reflexes.
Corpus callosum Answer: thick band of white matter connecting the cerebral hemispheres.
Fornix Answer: curved white matter tract involved in memory pathways.
Hypothalamus Answer: brain region below the thalamus that regulates homeostasis, hunger,
thirst, temperature, and hormones.
Lateral sulcus Answer: groove separating the temporal lobe from frontal and parietal lobes.
Longitudinal fissure Answer: deep groove separating the right and left cerebral hemispheres.
Mammillary bodies Answer: rounded hypothalamic structures involved in memory.
Olfactory bulb Answer: brain structure that receives smell information.
Olfactory tract Answer: pathway carrying smell signals from the olfactory bulb.
Optic chiasma Answer: crossing point of optic nerve fibers.
Optic nerve Answer: cranial nerve II that carries visual information from the eye.
Optic tract Answer: pathway carrying visual information from the optic chiasma toward the
brain.
Pineal gland Answer: endocrine gland that secretes melatonin.
Pituitary gland Answer: endocrine gland below the hypothalamus that releases many hormones.
APPHIA – Crafted with Care and Precision for Academic Excellence.
2
NEUROANATOMY CONCEPTS |THE SMART WAY TO PASS |
REAL TESTS, REAL RESULTS!
Axon Answer: long neuron process that carries impulses away from the cell body.
Axon hillock Answer: cone-shaped region where nerve impulses begin.
Axon terminal Answer: end of an axon that releases neurotransmitters.
Cell body (soma) Answer: main part of a neuron containing the nucleus and organelles.
Dendrite Answer: branched neuron process that receives signals.
Mitochondria Answer: organelles that produce ATP energy for the cell.
Nissl bodies Answer: rough ER in neurons that helps make proteins.
Node of Ranvier Answer: gap in myelin sheath where impulses jump during conduction.
Nucleus Answer: the control center of the cell that contains DNA.
Schwann cell Answer: cell that forms myelin around peripheral nerve axons.
Right cerebral hemisphere Answer: right half of the cerebrum, involved in sensory, motor, and
higher brain functions.
Left cerebral hemisphere Answer: left half of the cerebrum, involved in sensory, motor, and
higher brain functions.
Gyri Answer: raised folds on the surface of the cerebrum.
Sulci Answer: shallow grooves between gyri on the brain surface.
White matter Answer: pale nervous tissue made mostly of myelinated axons. It carries signals
between brain and spinal cord areas.
Gray matter Answer: darker nervous tissue made mostly of neuron cell bodies, dendrites, and
synapses. It processes information.
Arachnoid mater Answer: middle meningeal layer with a web-like appearance.
Dura mater Answer: tough outer meningeal layer that protects the brain and spinal cord.
Pia mater Answer: delicate inner meningeal layer that clings to the brain and spinal cord.
Cerebral aqueduct Answer: narrow passage connecting the third and fourth ventricles.
Choroid plexus Answer: tissue in ventricles that produces cerebrospinal fluid.
Fourth ventricle Answer: CSF-filled cavity between the brainstem and cerebellum.
APPHIA – Crafted with Care and Precision for Academic Excellence.
1
, Interventricular foramina Answer: passages connecting lateral ventricles to the third ventricle.
Lateral ventricle Answer: paired CSF-filled spaces in the cerebral hemispheres.
Septum pellucidum Answer: thin membrane separating the lateral ventricles.
Superior sagittal sinus Answer: dural venous channel along the top midline of the brain.
Third ventricle Answer: CSF-filled cavity in the diencephalon.
Frontal lobe Answer: brain lobe involved in voluntary movement, planning, personality, and
speech production.
Insula Answer: cerebral lobe deep within the lateral sulcus involved in taste, visceral sensation,
and emotion.
Occipital lobe Answer: brain lobe that processes vision.
Parietal lobe Answer: brain lobe involved in touch, body position, and spatial awareness.
Temporal lobe Answer: brain lobe involved in hearing, memory, and language comprehension.
Central sulcus Answer: groove separating the frontal and parietal lobes.
Superior colliculi Answer: midbrain structures involved in visual reflexes.
Inferior colliculi Answer: midbrain structures involved in auditory reflexes.
Corpus callosum Answer: thick band of white matter connecting the cerebral hemispheres.
Fornix Answer: curved white matter tract involved in memory pathways.
Hypothalamus Answer: brain region below the thalamus that regulates homeostasis, hunger,
thirst, temperature, and hormones.
Lateral sulcus Answer: groove separating the temporal lobe from frontal and parietal lobes.
Longitudinal fissure Answer: deep groove separating the right and left cerebral hemispheres.
Mammillary bodies Answer: rounded hypothalamic structures involved in memory.
Olfactory bulb Answer: brain structure that receives smell information.
Olfactory tract Answer: pathway carrying smell signals from the olfactory bulb.
Optic chiasma Answer: crossing point of optic nerve fibers.
Optic nerve Answer: cranial nerve II that carries visual information from the eye.
Optic tract Answer: pathway carrying visual information from the optic chiasma toward the
brain.
Pineal gland Answer: endocrine gland that secretes melatonin.
Pituitary gland Answer: endocrine gland below the hypothalamus that releases many hormones.
APPHIA – Crafted with Care and Precision for Academic Excellence.
2
