Nervous System & Endocrine System. The Lobes of Your Brain.

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Presentation transcript:

Nervous System & Endocrine System

The Lobes of Your Brain

Protecting the Brain A. The Meninges “Covering the Brain” (1) Dura Mater (outer layer) “Tough Mother” (2) Arachnoid (middle layer) “Spider-like” (3) Pia Mater (inner layer) “Delicate Mother”

Neurons A. Neurons provide quick communication between cells.

Recall the Parts of a Neuron

Neurons B. Neurotransmitters are released at the terminal (end) branches of neurons. (1) Recall: Serotonin & Dopamine C. Nerve impulses pass between separate neurons at specialized junctions/gaps called synapses.

Types of Neurons in a Reflex Pathway of a Reflex Arc (Reaction) (1) Receptor: Receives sensory stimulation. (2) Sensory Neuron (3) Interneuron (4) Motor Neuron (5) Effector: Muscle

Action Potentials Transmit Electrical Impulses to Stimulate Nerves A. An action potential is an explosion of electrical activity.

Somatic Nervous System A. Controls muscle contractions: (1) Biceps (Flexion) & Triceps (Extension)

Autonomic Nervous System A. Stimulates the Heart (Cardiac Muscle) (1) Parasympathetic slows the heart rate. (2) Sympathetic increases the heart rate.

Autonomic Nervous System

The Endocrine System

A. Utilizes glands to release hormones that regulate homeostasis in your body. (1) Homeostasis is your body in balance. B. Example of homeostasis in the body, when glucagon (hormone) and insulin (hormone) regulates the blood/glucose levels in your blood stream. C. High levels of blood glucose have been associated with Diabetes.

The Endocrine System

Diabetes is on the Rise in the United States

Symptoms of Diabetes & Obesity in the United States

The Nervous & The Endocrine Systems work Together A. An example of these two systems working together would be your body’s response to stress.

Stress

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