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CHAPTER3- NEUROBIOLOGICAL BASES OF BEHAVIOR

These notes identify the funtion of the nervous system and lists the three types of neurons and tells how a nerve impulse travels.
by

Sheeny Bendejo-Reponte

on 7 October 2012

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Transcript of CHAPTER3- NEUROBIOLOGICAL BASES OF BEHAVIOR

CHAPTER 3
THE NEUROBIOLOGICAL BASES OF BEHAVIOR CENTRAL NERVOUS SYSTEM
consist of the brain and spinal cord which together contains more than 90% of body's neuron
it serves to connect the sensory and motor fibers within the nervous system. 3 regions of brain
*hindbrain- close to the spinal cord
which composed of medulla oblongata, the pons, and the cerebellum.

*midbrain- serves as a connecting link bwetween hindbrain and forebrain.

*forebrain- largest part of the brain according to location. PERIPHERAL NERVOUS SYSTEM-
connsists of CNS used to connect brain and the spinal cord and the other part of the body
1. autonomic nervous system- it carries messages back between
the CNS and the heart, lungs and other organs and glands.
* sympathetic NS- arouses the body while preparing for emergencies.
*Parasympathetic NS- calms the body after arousal. 3 DIVISIONS OF BRAIN CENTRAL CORE

*medulla oblongata- regulate respiration, heart rate and blood pressure

*pons- regulates sleep-wake cycles.

*cerebellum- regulates reflexes and balance. The little brain.

*reticular activating system- working center of the brain. (alertness and sleep) LIMBIC SYSTEM
*hippocampus- formation of new memories.

*Thalamus- relays the messages and senses. Received impulsesto every part of the body except nose.

*Hypothalamus- control all happiness of the person. Regulate eating, drinking and sleeping.
2 division
- lateral hypothalamus
-ventromedial

*amygdala-envolve learning and memory. CEREBRAL CORTEX
*occipital lobe- received and process visual information.

*Temporal Lobe- smell, hearing. equilibrium, motivation and emotions

*Parietal lobe- sensory projection and association areas.

*frontal lobe- goal directing behavior, concentration temperament. 2. Somatic Nervous system- it transmit information from the senses to the CNS and carries signal from CNS to the muscles.

*Sensory Nerves- transmit information about the external stimulation from the skin, muscles and joints to the CNS.

*Motor Nerves- carry impulses from the CNS to the muscles, where they initiates action. ENDOCRINE SYSTEM - it helps in conjunction with the nervous system to control bodily functions and behavior. These glands have to do with the process of homeostasis which is the maintainance of biochemical balance in the body.
- it is composed of glands that secrets called hormone. pituitary gland-
also called as hyphophysis, a greek word means to grow. It is a pea-sized globe located near the bottom of the brain, controlled by Hypothalamus.
it is called the master gland of the body because it secretes hormones that control the activities of other gland.
it can caused disorder called dwarfism and giantism. 2 conditions of hormones
* over secreting or hyper secretion
*less secreting or hypo secretion Thyroid gland
located at the base of the base of the throat. it secrets two hormone known as thyroxine and idothyroxine.
it can caused hyperthyroidism due to over secretion of hormones and hypothyroidism due to undersecretion of hormone. pancreas
lies in the curve between the stomach and the small imtestine. it secretes two regulating hormones called insulin and glucagon.
it can caused diabetes and hypoglycemia, a low blood sugar. adrenal gland
- it is called an emergency gland. It produce emergency gland called narepinephrine.
- it released two hormones called epinephrine and norepinephrine.
- it is located at the top of the kidney. Gonads
- it produced hormones that affect bodily developmen and maintain reproductive organs in adults.
- dysfunction occurs when there is a lack of sex hormones during puberty which affects the development of secondary sexual characteristics. Ovaries(female)
- it produce hormones called progesterone and estrogen.
- located at the lateral wall of the pelvis.
- it can cause problem in the secondary sexual characteristics. testes(male)
- it produced hormones called androgen and testosterone.
- located inside the scrotum,
- it can caused growth develpoment problem. submitted by:
SHEENY LOU B. REPONTE
REYCEL ANN DELGADO
JOHN ALTONAGA
JOANNA TEJERO
CHERRY MARTILLANO
ERIKA LUPANGO
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