Brain Architecture Jr / Sr Vet Science Mrs. Chotkowski Nervous System

OKAY……………..Let’s review Brain: Three basic units….. 1.Forebrain 2.Midbrain 3.Hindbrain

Hind Brain Includes: Upper part of brain stem Upper part of spinal cord Wrinkled ball of tissue called the: cerebellum (Tree of Life)

Hind Brain Controls: Bodily vital functions such as: respiration and heart rate

Hind Brain Cerebellum: Coordinates movement: Ball throwing, playing the piano

Mid Brain Controls some reflex actions: Eye movement and other voluntary movement.

Fore Brain The largest and most highly developed part of the human brain. Consists primarily of the cerebrum and the structures beneath it.

Fore Brain Cerebrum: The source of intellectual activities Is split into two halves Signals cross over when they go to the brain R L

Cerebrum Second largest part of the brain Coordinates muscle activity for smooth movement

Cerebrum

Cerebellum

Lobes of the Brain 1.Frontal Lobe: Organization, reason, short term storage

Lobes of the Brain 2.Parietal Lobes: Sensory Areas: taste, touch, and movement. (Reading and arithmetic)

Lobes of the Brain 3.Occipital Lobes: Process images from the eyes

Lobes of the Brain 4.Temporal Lobes: Appreciating music, receives info from the ears, integrating memory such as music, taste, sound, sight and touch.

Cerebral Cortex Gray matter, surface of the brain, the width of three dimes. Vital information processing takes place here.

size of a pearl Adrenaline Emotions Secretes: Releasing and inhibiting factors that affect substance release from pituitary

Hypothalamus

Thalamus Clearinghouse for information going to and from the spinal cord

Thalamus

Meninges Connective tissue, encases the brain and spinal cord 3 layers Encloses the CNS 3 layers: Dura mater, Arachnoid and Pia mater Means durable Means spider Means soft and tender

Meninges

Olfactory Bulb Responsible for an animal’s sense of smell

Olfactory Bulb

Pituitary Gland Also called hypophysis Master gland: it secretes many hormones that control or master other endocrine glands

Pituitary Gland Acts in response to: Stimuli from the hypothalamus

Pituitary Gland

Medulla Oblongata Cranial end of the spinal cord Controls basic life functions

Medulla Oblongata

Spinal Cord Continuation of the medulla oblongata

Spinal Cord

Brain Stem Stalk-like, connects the cerebral hemisphere with the spinal cord: Consists of the: Pons, medulla oblongata, mid brain and interbrain

Brain Stem