8.8 Brain Flashcards
It connects the spinal cord to the remainder of the brain
Brainstem
Brainstem consist of 3 parts which are _____
- Medulla Oblongata
- Pons
- Midbrain
Most inferior of the brain
Medulla Oblongata
Functional bridge that serves as pathway for relaying information between cerebrum and cerebellum
Pons
Smallest region of the brain
Midbrain
Serves as major relay for auditory nerve pathway
Inferior Colliculi
Serves involved in visual reflex and receive touch and auditory input
Superior Colliculi
Group of nuclei that is scattered through the brainstem and play important role in regulatory function is called
Reticular Formation
Attached to brainstem that is important in maintaining muscle tone, balance, and coordination of movement
Cerebellum
Located between the brainstem and the cerebrum
Diencephalon
3 components of diencephalon
Thalamus, Epithalamus, Hypothalamus
What is Cerebellar Peduncles
A material that connects cerebellum and brainstem
Cluster of nuclei that influences mood and pain
Thalamus
Largest Diencephalon
Thalamus
Consist of a small nuclei that involves emotional and visceral response to odors, and pineal gland
Epithalamus
Gland that influences puberty and controlling long-term cycle
Pineal Gland
Most Inferior part of diencephalon
Hypothalamus
It control secretion of hormones and plays central role in controlling body temperature, hunger, and thirst
Hypothalamus
Infundibulum
funnel-shaped that attaches pituitary gland to hypothalamus
Mamillary
Involved in emotional response to odors and memories
Largest part of the brain
Cerebrum
Conspicuous surface if brain hemisphere is called
Gyri
Sulci
Groves in between the gyri
Enumerate Cerebral hemisphere
Frontal; Parietal; Occipital; Temporal Lobes
Control of voluntary motor functions; olfactory reception
Frontal Lobe
Principal center for receiving and consciously perceiving most sensory information
Central Sulcus
Sets apart or the gap between frontal and parietal lobe
It receives and perceiving visual input
Occipital Lobe
Play important role in memory; involved in olfactory and auditory sensation
Temporal Lobe
Involved in perception of taste
Insula
Prefix of ascending tract begins with
spino-
Ascending tracts action potential pathway
PNS to various parts of the brain
Spinothalamic tract is
action potentials dealing with sensations such as pain and temperature
Transmit action potential dealing with sensation
Dorsal Column
Spinocerebellar tracts
transmit information to the cerebellum
Responsible for maintaining body posture and balance
Somatic Motor System
Movement occurs without conscious thought
Involuntary Movement
Movement occurs with conscious thought
Voluntary Movement
Right cerebral hemisphere controls what part of the body
Left part
This is controlled by the Left cerebral hemisphere
Right body part
Largest Commissure is called
Corpus Callosum
Device that can detect electrical activity
Electroencephalogram
Four types of Electroencephalographic Tracing
Alpha, Beta, Theta, Delta Waves
EEG detects action potentials called
Brain Waves
EEG tracing frequency that can be observe in a resting normal person
Alpha Waves
Higher frequency than alpha waves; detected during intense mental activity
Beta Waves
Frequency that occurs during deep sleep and patients with severe brain disorder
Delta waves
Frequency observed in frustration or brain disorder; highest frequency
Theta Waves
Meninges
Connective tissue that surrounds and protects the brain and spinal cord
Types of meninges
Dura; Arachnoid; Pia Matter
Most superficial and thickest meninge
Dura Matter
Thin and wispy and the middle part of meninge
Arachnoid Matter
Innermost and tightly attached to the brain and spinal cord
Pia Matter