Unit 1.2 Flashcards
(23 cards)
Cerebral Cortex
Responsible for higher level cognitive functions, thinking, perceiving, & decision making
White vs grey matter
White- writing, cables that connect
Gray- thinking, processor
Corpus Colossum
- Connects the hemispheres
- W/o it, brain hemispheres couldn’t operate independently -> difficulty coordinating movements between the 2 sides of the body
- Can be cut; split brain surgery
Frontal Lobe
- front of brain
- higher level cognitive functions; decision making, problem solving, planning, personality expression
Example of the frontal lobe working?
As a chef cooks, their frontal lobe helps them make quick decisions about ingredient quantities, cooking time, & planting arrangements
Temporal lobe
- below parietal lobe, near base of brain
- processing auditory information, language comprehension, & memory formation
- interprets sound signals from the ears
Temporal love example
As hear song, princess sound waves and d rhythm to recognize tune & understand lyrics. Also helps you associate music with memories & emotions.
Parietal lobe
- top of brain
- processing sensory information from the body; touch, temperature, & spatial awareness
Parietal lobe example
Helps you when catching by; judge trajectory, calculate speed & distance, & coordinate the movements needed to catch ur
Occipital lobe
- “eyes in the back of your head”
- processing visual information received from the eyes
Motor cortex
- between frontal & parietal
- panning, executing, & controlling voluntary body movements
- sends signals to muscles allowing them to perform actions; walking, talking, grasping objects
Broca’s speech area/ aphasia
- your words become broken- ≠ able to speak what you want to say muscle* wise
- controls motor function involved with speech production & language comprehension
- between frontal & temporal lobe
- can be caused by stroke
- physicals struggle ≠ mental comprehension issue
Wernicke’s area/ aphasia
- rambling on without meaning
- ≠ form meaningful speech
- Q: what time is it? A: The sky is blue.
Hippocampus
Forking & consolidating new memories
Hypothalamus
- regulating essential body functions; hunger, thirst, body temperature, sleep- wake cycles
- maintain homeostasis in body
Amygdala
- process emotions FEAR & AGGRESSION
- threat detection system
- fight or flight responses to perceived danger
Thalamus
- relay station; gateway for sensory input
- process & relays sensory information; sight, sound, touch, taste to the cerebral cortex
- directs sensory signals to appropriate areas of the brain for further processing
Pituitary gland
- pea size @ base of brain
- hormone production
- coordinate hormonal activity & maintain homeostasis in body
Brain stem
- oldest, most primitive part of brain
- basic & life- sustaining functions; breathing, ❤️rate, sleep- wake cycles
- pathway for neural signals between cerebral cortex & spinal cord
Somatosensory Cortex
- processing sensations from the skin, muscles, & joints
- interprets touch, pressure, temperature, pain signals from different parts of the body allowing us to perceive & respond to sensual stimuli
Reticular Activation System (RAS)
- network neurons in the brain stem that regulate arousal, attention, & consciousness
- filters sensory information & modulates brain activity, helping to maintain wakefulness & alertness
- immediate response; 🫰(snap)
Medulla
- @ base of brain
- regulates essential autonomic functions; heartbeat, breathing, blood pressure
- relay station for nerve signals traveling between the brain & spinal cord
- involuntary bodily processes crucial for survival
- keeps you alive
Cerebellum
- coordinate balence
- receives input from sensory systems & other parts of the brain to fine tune motor movements & ensure smooth
- if injured, ≠ walk in a straight line
