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The Human Brain: Anatomy, and Functions,

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Presentation on theme: "The Human Brain: Anatomy, and Functions,"— Presentation transcript:

The Brain is a highly organized ORGAN that contains approximately 100 billion neurons and has a MASS of 1.4 Kilograms. The Brain is Protected by a BONY.

NERVOUS SYSTEM MCGONIGLE Intro to Psychology. Nervous System  Made up of the spinal cord and the brain  Neurons : Nerve cell – the neurons transmit.

Chapter 7 The Nervous System

The Nervous System.

Overview The Nervous System. The nervous system of the human is the most highly organized system of the body. The overall function of the nervous system.

And Brain Organization

Major Brain Structures and Functions Made by Ms. Collins Unscrupulously used by Mr. McNalis.

The Meninges Dura mater - outermost layer Arachnoid mater - no blood vessels, in between layer (resembles a spider web) Pia mater -inner membrane, contains.

Nervous System Outline

Principles of Health Science There are two main divisions of the nervous system: The Central Nervous System The Peripheral Nervous System Divisions.

Chapter 7:6 The Nervous System.

Anatomy & Physiology Nervous System.

The Human Brain: Anatomy, Functions, and Injury. Main Menu Brain Anatomy Brain Functions Injury Mechanisms.

The Amazing Brain Weighs about 3 pounds Major portions: Cerebrum

 600 mya = sponges have different tissues  550 mya = flatworm with “eyespots’  500 mya = first fish  360 mya = reptiles w/lower brains  65 mya =

ANATOMY NERVOUS SYSTEM OVERVIEW. Nervous System  The nervous system of the human is the most highly organized system of the body.  The overall function.

Unit 1D: The Central Nervous System

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Human Brain Anatomy PPT Illustration Free Download

Additional information.

Ever wondered what’s going on inside that noggin of yours? The brain, a marvel of nature, is the epicenter of our thoughts, emotions, and bodily functions. Let’s dive deep into its intricate anatomy.

The brain isn’t just a lump of gray matter; it’s an intricate network of billions of neurons, working in harmony to make you, well, you. Imagine it as the world’s most advanced supercomputer, but instead of circuits and wires, it’s made of cells and neurotransmitters.

Major Parts of the Brain Anatomy – Free Download PPT Slide

When preparing a powerpoint presentation on the intricate details of brain anatomy, it’s essential to understand the structure and physiology of the central nervous system. This presentation will guide viewers through the various parts of the brain, ensuring a comprehensive understanding.

The Cerebrum: The Largest Part of the Brain

The cerebrum is the largest part of the brain, housing over 100 billion neurons. It’s divided into two hemispheres: left and right, connected by the corpus callosum. This part of the brain is responsible for higher cognitive functions and voluntary activities. Imagine it as the CEO of a company, overseeing everything.

Lobes of the Cerebrum

• Frontal Lobe: This lobe manages skills like reasoning, planning, and problem-solving. It’s also home to the Broca’s area, which is crucial for speech production.
• Parietal Lobe: Responsible for processing sensory information, such as touch and temperature. Its surface area is marked by sulci and gyri, increasing the cortex’s capacity to house neuron cell bodies.
• Temporal Lobe: This is the brain’s auditory area, serving as a memory bank and processing sounds.
• Occipital Lobe: The primary visual processing center, akin to the graphics card of a computer. It interprets images from the optic nerves.

The Cerebellum: The Brain’s Coordinator

The cerebellum, part of the hindbrain, is essential for muscle co-ordination and maintaining posture and balance. With its white matter tracts resembling a tree, it connects to the brainstem and ensures smooth movements.

The Brainstem: The Bridge to the Spinal Cord

The brainstem is a crucial structure, connecting the cerebrum and cerebellum to the spinal cord. It’s divided into three main parts:

• Midbrain: This section controls reflex movements of the eyes and head.
• Pons: Located below the midbrain, the pons plays a role in controlling breathing and relaying signals between different parts of the brain. Ever wondered about the function of the pons? It’s also involved in functions like swallow, cough, and sneeze.
• Medulla Oblongata: This part controls vital functions like heart rate and blood pressure. It’s also the point where the brainstem connects to the spinal cord.

Additional Resources

For those interested in diving deeper, there are pdf files, google slides, and PPT presentations available for download. These resources include detailed diagrams, images, and specific functions of each brain part. Whether you’re preparing for a class or just curious, these resources are invaluable.

Related Content: Viewers also liked our segments on the thalamus, hypothalamus, and the cerebral cortex. The cortex contains layers, with the outermost layer being crucial for sensory perception and voluntary motor functions. Don’t miss our recently uploaded content on the peripheral nervous system, cranial nerves, and the brain’s blood supply.

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The Human Brain

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Human Brain - PowerPoint PPT Presentation

Human Brain

Human brain the most complex living structure on the universe -- ... – powerpoint ppt presentation.

• Facts about Brain
• Brain Cells
• Lobes of the brain
• Synaptic Transmission
• Right Left Brain
• Types of BCI
• How brain-computer interfaces work
• Electrode placement
• Brain waves
• BCI applications
• About 3 pounds (1,300 grams)
• 78 water, 10 fat, 8 protein
• Less than 2.5 of bodys weight
• Uses 20 of bodys energy
• People only use 10 of their brain
• 100 billion neurons (Greek word meaning bowstring)
• 1 trillion glial cells (Greek word meaning glue)
• 1,000 trillion synaptic connection points
• 280 quintillion memories
• Brain is modified by environment
• Brain is adaptable Plasticity Use it or Lose it
• Left and Right Hemispheres
• Left hemisphere for most people is the dominant hemisphere- responsible for production of language, mathematical ability, problem solving, logic
• Right hemisphere thought to be responsible for creativity and spatial ability
• Everything people have ever experienced is stored somewhere in their brain
• At birth people have all the neurons that they will ever have
• Glia - (Greek word meaning glue)
• 90 of the brain cells 
• Less known about glia cells 
• No cell body
• Remove dead brain cells and give structural support
• Neurons (Greek word meaning bowstring)
• 100 billion neurons in human brain
• Neurons essential to performing the brain's work
• Consist of a compact cell body, dendrites, and axons
• Neurons (brain cells) make connections between different parts of the brain.
• Information is carried inside a neuron by electrical pulses and transmitted across the synaptic gap from one neuron to another by chemicals called neurotransmitters.
• Learning is a critical function of neurons.  
• Dendritic branching helps make connections between cells.
• As cells connect with other cells, synapses occurs.  
• New synapses appear after learning.
• Repeating earlier learning makes neural pathways more efficient through myelination (fatty substances formed around axons, Myelination enables nerve cells to transmit information faster and allows for more complex brain processes)
• The Frontal Lobe of the brain is located deep to the Frontal Bone of the skull.
• It plays an integral role in the following functions/actions
• The Parietal Lobe of the brain is located deep to the Parietal Bone of the skull.
• It plays a major role in the following functions/actions
• Spatial awareness and perception
• The Occipital Lobe of the Brain is located deep to the Occipital Bone of the Skull.
• Its primary function is the processing, integration, interpretation, etc. of VISION and visual stimuli.
• The Temporal Lobes are located on the sides of the brain, deep to the Temporal Bones of the skull.
• They play an integral role in the following functions
• Organization/Comprehension of language
• Information Retrieval (Memory and Memory Formation)
• Two sides or hemispheres of the brain LEFT and RIGHT
• We have two cerebral hemispheres connected by the corpus callosum. This is a bundle of nerves that allows each side of the brain to communicate with each other.
• Each side of the brain processes things differently.
• Looks at parts
• Right Brain
• Synthesizing
• Looks at wholes
• processes things more in parts and sequentially
• recognizes positive emotions
• Identified with practicality and rationality
• Understands symbols and representations
• Processes rapid auditory information faster than the right (crucial for separating the sounds of speech into distinct units for comprehension)
• is responsible for language development. It develops slower in boys, that is why males usually develop more language problems than females.
• Recognizes negative emotions
• High level mathematicians, problem solvers, and chess players use
• Responds to touch and music (sensory)
• Responsive to color and shape
• Emotional and originative
• A Brain-Computer Interface (BCI) is a device that enables communication without movement
• BCI can help people with inabilities to control computers, wheelchairs, televisions, or other devices with brain activity.
• Translate your brains electrical activity (EEGs) into messages or commands.
• The four BCI components acquisition, processing, output, environment.
• Invasive techniques, which implant electrodes directly onto a patients brain
• Noninvasive techniques, in which medical scanning devices or sensors mounted on caps or headbands read brain signals (EEG)
• BCI is a new neuroscience paradigm that might help us better understand how the human brain works
• BCI research allows us to develop a new class of bioengineering control devices and robots
• BCI hold promise for rehabilitation and improving performance
• BCI can expand possibilities for advanced human computer interfaces (HCIs)
• An electroencephalogram is a measure of the brain's voltage fluctuations as detected from scalp electrodes.
• It is an approximation of the cumulative electrical activity of neurons.
• EEG measures the electrical activity of the brain with multiple electrodes placed on the scalp
• It is portable and relative inexpensive that is why most noninvasive BCIs are presently based on EEG.
• EEGs require electrodes attached to the scalp with sticky gel
• Require physical connection to the machine
• Standard 10-20 System
• Spaced apart 10-20
• Letter for region
• F - Frontal Lobe
• T - Temporal Lobe
• O - Occipital Lobe
• Number for exact position
• Odd numbers - left
• Even numbers - right
• A more detailed view
• Generally grouped by frequency (amplitudes are about 100µV max)
• Enabling disabled people
• Vision and hearing
• Paralysis treatment
• Prosthetic devices (legs, hands etc)
• Psychotherapy
• Diagnostics
• Military and civil research
• Making dangerous jobs
• Provide a means of communication to completely paralyzed patients
• Surgically implanted devices used as replacement for paralyzed patients
• Allow patients to control a computer by conscious changes of brain activity
• Allow those with poor muscle control to
• communicate and control physical devices

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HUMAN BRAIN

Dec 19, 2019

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HUMAN BRAIN. BY, BINCY CHERIAN ASST. PROF COLLEGE OF NURSING KISHTWAR. Regions of the Brain. Cerebral hemispheres Diencephalon Brain stem Cerebellum. Figure 7.12. Cerebral Hemispheres (Cerebrum). Paired (left and right) superior parts of the brain

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HUMAN BRAIN BY, BINCY CHERIAN ASST. PROF COLLEGE OF NURSING KISHTWAR

Regions of the Brain • Cerebral hemispheres • Diencephalon • Brain stem • Cerebellum Figure 7.12

Cerebral Hemispheres (Cerebrum) • Paired (left and right) superior parts of the brain • Include more than half of the brain mass

Cerebral Hemispheres (Cerebrum) • The surface is made of ridges (gyri) and grooves (sulci)

Lobes of the Cerebrum • Fissures (deep grooves) divide the cerebrum into lobes • Surface lobes of the cerebrum • Frontal lobe • Parietal lobe • Occipital lobe • Temporal lobe

Lobes of the Cerebrum

Specialized Areas of the Cerebrum • Somatic sensory area – receives impulses from the body’s sensory receptors • Primary motor area – sends impulses to skeletal muscles • Broca’s area – involved in our ability to speak

Sensory and Motor Areas of the Cerebral Cortex

Specialized Area of the Cerebrum • Cerebral areas involved in special senses • Gustatory area (taste) • Visual area • Auditory area • Olfactory area

Specialized Area of the Cerebrum • Interpretation areas of the cerebrum • Speech/language region • Language comprehension region • General interpretation area

Specialized Area of the Cerebrum

Layers of the Cerebrum • Gray matter • Outer layer • Composed mostly of neuron cell bodies Figure 7.13a 7.33a

Layers of the Cerebrum • White matter • Fiber tracts inside the gray matter • Example: corpus callosum connects hemispheres Figure 7.13a 7.33b

Layers of the Cerebrum • Basal nuclei – internal islands of gray matter • Regulates voluntary motor activities by modifying info sent to the motor cortex • Problems = ie unable to control muscles, spastic, jerky • Involved in Huntington’s and Parkinson’s Disease Figure 7.13a 7.33c

Diencephalon • Sits on top of the brain stem • Enclosed by the cerebral heispheres • Made of three parts • Thalamus • Hypothalamus • Epithalamus 7.34a

Diencephalon Figure 7.15 7.34b

Thalamus • Surrounds the third ventricle • The relay station for sensory impulses • Transfers impulses to the correct part of the cortex for localization and interpretation 7.35

Hypothalamus • Under the thalamus • Important autonomic nervous system center • Helps regulate body temperature • Controls water balance • Regulates metabolism 7.36a

Hypothalamus • An important part of the limbic system (emotions) • The pituitary gland is attached to the hypothalamus 7.36b

Epithalamus • Forms the roof of the third ventricle • Houses the pineal body (an endocrine gland) • Includes the choroid plexus – forms cerebrospinal fluid 7.37

Brain Stem • Attaches to the spinal cord • Parts of the brain stem • Midbrain • Pons • Medulla oblongata 7.38a

Brain Stem Figure 7.15a 7.38b

Midbrain • Mostly composed of tracts of nerve fibers • Reflex centers for vision and hearing • Cerebral aquaduct – 3rd-4th ventricles 7.39

Pons • The bulging center part of the brain stem • Mostly composed of fiber tracts • Includes nuclei involved in the control of breathing 7.40

Medulla Oblongata • The lowest part of the brain stem • Merges into the spinal cord • Includes important fiber tracts • Contains important control centers • Heart rate control • Blood pressure regulation • Breathing • Swallowing • Vomiting 7.41

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