Brain/Cranial Nerves Word Scramble
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Question | Answer |
Cerebrum | Outer region of gray matter, "bark" |
Gyri | Folds (convolutions) |
Sulci | Shallow grooves in the folds |
Fissures | Deep grooves in the folds |
Longitudinal Fissure | Separates right and left cerebrii into cerebral hemispheres |
Corpus Callosum | Bundle of white, myelinated axons that connects the two cerebral hemispheres |
Lobes in the Cerebrum | Frontal, Parietal, Occipital and Temporal |
Lobes are named after what | The bones that cover them |
Central Sulcus | Separates frontal lobe from parietal lobe |
Postcentral Gyrus | Just after the central sulcus, primary sensory cortex |
Precentral Gyrus | Just before the central sulcus, primary motor cortex |
Insula | Lobe which is interior and cannot be seen on brain surface |
Olfactory | Sense of smell |
Optic | Sensory for vision |
Oculomotor | Motor for light accommodation |
Trochlear | Motor for eye movement |
Trigeminal | Sensory for face & head; Motor for mastication |
Abducens | Motor for eye movement |
Facial | Motor for facial expression; sensory for taste |
Vestibulocochlear | Sensory for hearing and balance |
Glossopharyngeal | Sensory for taste; motor for swallowing & saliva |
Vagus | Sensory for thoracic & abdominal organs; motor for speaking, gagging & swallowing |
Accessory | Motor for head turn (SCM) and shoulder shrug |
Hypoglossal | Motor for tongue |
Adult Brain Structures | Telencephalon, Diencephalon, Mescencephalon, Metencephalon, and Myelencephalon |
4 Major Parts of the Brain | Brain stem, Cerebellum, Diencephalon, Cerebrum |
Brain Stem | Continuous with spinal cord; Medulla Oblongata, Pons and Midbrain |
Cerebellum | "Little Brain" for balance |
Diencephalon | Relay and Reaction center; Thalamus, Hypothalamus, and Epithalamus |
Cerebrum | Largest part of your brain |
Meninges | Protect brain and spinal cord from mechanical injury and support dural sinuses that drain blood from head to heart |
Blood flows to the brain mainly through the what | Internal carotid artery and vertebral artery |
Brain eats what percent of the body's oxygen | 20% |
Blood drains away from the brain into the what | Dural venous sinuses |
Blood-Brain Barrier (BBB) | Highly selective permeable barrier |
Cerebrospinal Fluid | Clear, watery fluid in and around the brain and spinal cord |
Ventricles | CFS-filled cavities within the brain |
4 Ventricles | 2 laterals, 3rd and 4th Ventricles |
Pyramids | Visible bulges on the anterior portion of the medulla oblongata |
Medulla Oblongata | Cardiovascular center regulates rate and force of heartbeat |
Medullary respiratory center adjusts the basic rhythm for | Breathing |
The brain stem controlls what | Vomitting and sneezing |
Structures of the Medulla Oblongata | Pons, pyramids and site of decussation (Male pregnant seahorse) |
Alcohol overdose suppressess the what? | Medullary Respiratory Center |
Pons | The 'bridge' that connects parts of the brain with other parts, directly above medulla and extends to the midbrain, has the pontine respiratory group |
Midbrain | Mesencephalon (middle), substantia nigra |
Substantia Nigra | Contains neurons that release dopamine |
Reticular Formation | Broad region of white and gray matter throughout brainstem |
Responsible for consciousness and awakenign from sleep and maintains attention | Reticular Formation |
Reticular Activating System (RAS) | Regulates the shift between sleep and wakefulness; detects visual, auditory, pain touch, and pressure |
Cerebellum | 1/10th the size of the cerebrum; evaluates movement; regulates posture and balance |
Ataxia | Lack of balance, 'drunk test' |
Arbor vitae | 'Tree of Life', tracts of white matter that look like a tree |
Diencephalon | Thalamus, hypothalamus, epithalamus, and 3rd ventricle |
Diencephalon includes the what | Pituitary gland |
Sensory and motor processing between higher and lower brain centers | Diencephalon |
Thalamus | 'Inner Chamber'; relay station for sensory impulses that reach the brain |
Hypothalamus | Under the thalamus, regulates homeostasis, controls Autonomic Nervous System |
Infundibulum | Stalk that connects the pituitary gland to the hypothalamus |
The hypothalamus controls what | Releasing hormones; Rage, agression, pain, pleasure and sexual arousal; Eating and drinking; Body temperature; Circadian rhythms and states of consciousness |
HPA | Hypothalamic-Pituitary Axis; Regulates hormones secreted by other glands, such as thyroid and adrenal glands |
Epithalamus | Just about the thalamus; Contains the pineal gland |
Pineal Gland | Pinecone shape, forms roof of 3rd Ventricle, secretes melatonin to promote sleepiness |
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