Chapter 9 : Nervous System (Other parts of the brain) Flashcards
Diencephalons (Area)
Inner brain area composed of the Thalamus, Hypothalamus, and Epithalamus
Diencephalons (Associations)
With the Pineal body, Pituitary gland, Opic tract, mammillary bodies and limbic system
Thalamus
Acts as a relay center for sensory input (sending them to the proper lobe of the cerebrum)
Hypothalamus (secretes)
Secretes neurohormones that affect the pituitary gland
Hypothalamus (regulates)
Regulates body cycles such as water/electrolyte balance, thirst, hunger/appetite, and body temperature
Pineal Body (gland)
Secretes melatonin, regulates sleep/wake cycle, and regulates the onset of puberty
Pituitary Gland (Hypophysis) (Place)
Hangs from the Hypothalamus and rests in the sella tucia of the sphenoid bone
Pituitary Gland (releases)
Hormones that regulate the release of other endocrine hormones; responds to impulses sent from the hypothalamus
Brain Stem
Base of the brain consisting of the midbrain, pons, and medulla oblongata
Midbrain
Relay station for the motor information from the motor cortex to the spinal card, serves as the brain’s auditory and visual reflex center
Pons
Sends signals to stop normal breathing and increase breathing rates when more oxygen is needed
Medulla Oblongata
Regulates heart rate, respiration, and blood pressure (keeps you alive) and connects the brain to the spinal cord
Cerebellum
Regulates coordination, maintaining posture, and proper muscle tone (contain tree like branches of white matter called arbor vitae)
Spinal cord
17 inch extension of the brain stem that provides a two way path for messages between the brain and the body
Descending tract
(ventral root) carries motor impulses down the front from the brain to the body
