The Human Brain Nervous System Group Day A

The Human Brain Nervous System Group Day A Block 3

Brain Anatomy • Weighs around 3 pounds or 1. 4 Kilograms. • Divided into four main areas: Brain Stem, Cerebellum, Diencephalon, and Cerebrum.

1. Brain Stem • Located at the base of the Brain • Regulates reflexes and basic involuntary actions. • Regulates heart rate, breathing, sleeping, and blood pressure.

II. Cerebellum • The second largest part of the brain. • Coordinates muscle movement and controls balance. • Receives information from spinal cord and other parts of the brain.

III. Diencephalon • Composed of Thalamus, Hypothalamus, Epithalamus, and Subthalamus. • Inner part of the brain. • Relay system for sensory input. • Interactive site for central nervous and endocrine system.

IV. Cerebrum • Largest part of the brain. • AKA Cerebral Cortex. • Processing center for thought, language, memory, sensory information, and movement. • The Cerebrum is divided into four different lobes that perform specific tasks.

I. Frontal Lobe • Two frontal lobes. • Directly behind forehead. • Responsible for complex mental processes including: speech, thought, learning, emotion, and movement. • Only some aspects of memory take place here.

II. Occipital Lobe • Sits at the back of the brain behind the occipital bone. • Main job is to process visual images.

III. Parietal Lobe • Located on the sides of the upper part of the brain. • Main Function is to interpret bodily sensations including: touch, temperature, and pain.

IV. Temporal Lobe • Located on sides of lower part of the brain. • Main function is to process sounds. • Has a memory function as well. • Sectors here assist with vision.

Interior Anatomy

Pons, Pituitary Gland, Pineal Gland • Pons-Inside brain stem. Relay station for sensory information and movement. Regulates sleep. • Pituitary-Part of endocrine system. • Pineal Gland-Connected to our optic nerves and regulates sleep by secreting melatonin (hormone that causes sleepiness).

Fornix, Corpus Callosum, Midbrain • Fornix-Wishbone shaped. Bundle of nerve fibers that connects certain parts of brain (limbic system). • • Corpus Callosum-Long band of nerve fibers between cerebral hemispheres. Communication between left and right sides of our brain. Midbrain-Located on top of brain stem. Delivers processed information regarding sight, hearing, and body movement.

Medulla Oblongata • Lower portion of brain stem. • Controls certain involuntary functions including: breathing, heartbeat, and blood pressure.

Main Source: • http: //science. nationalgeographic. com/s cience/health-and-human-body/humanbody/brain-article/