Biology: Nervous System

Medulla Oblongata

Medulla Oblongata

________: Contains centers that regulate heart and lung functioning, swallowing, coughing, vomiting, and sneezing.

bridge of nerve

The two hemispheres are connected by a(n) ________ fibers that relay information between the two hemispheres called the corpus callosum.

sensory input

Responsible for receiving and processing ________ from the skin, muscles, tendons, joints, eyes, tongue, nose and ears as well as excite the voluntary contraction of skeletal muscles.

Neurons

________- They are also called nerve cells.

Axon

________: A single branch which conducts nerve impulses away from the cell body.

relay center

It serves as ________ for sensations like: Heart rate, blood pressure, temperature control, behavioral response, digestive functions, water and electrolyte balance.

Brain Stem

________: Made up of the midbrain; Pons and the medulla oblongata.

Pons

________: Located between the midbrain and the medulla oblongata.

Dendrites

________: Thin branching extensions of the cell body that conduct nerve impulses toward the cell body.

memory

It is responsible for higher neural functions such as ________, learning, and emotion.

Midbrain

________: Involved with the visual reflexes.

Neuroglia

________- Support, protect, connect, and remove debris from the nervous system.

Terminal end fibers

________ are located at the ends of the axon and they transmit impulses leaving the neuron across a synapse to the next neuron.

Pia Mater

________: Innermost layer containing several blood vessels.

peripheral nervous system

The nerves from the ________ extend out from the spinal cord.

Dura Mater

________: Outer tough fibrous membrane.

Cell Body

________: The main processing center of the cell.

Neurons

They are also called nerve cells

Cell Body

The main processing center of the cell

Dendrites

Thin branching extensions of the cell body that conduct nerve impulses toward the cell body

Axon

A single branch which conducts nerve impulses away from the cell body

Efferent(Motor)

Conveys information from the CNS to muscles and glands

Afferent (Sensory)

Carry information from the sensory receptors to the CNS

Interneuron

Carry and process sensory information

Neuroglia

Support, protect, connect, and remove debris from the nervous system

The central nervous system is composed of two major interconnected organs

The brain and the spinal cord

Brain

it weighs 3 pounds in adults

Brain Stem

Made up of the midbrain; Pons and the medulla oblongata

Midbrain

Involved with the visual reflexes

Pons

Located between the midbrain and the medulla oblongata

Medulla Oblongata

Contains centers that regulate heart and lung functioning, swallowing, coughing, vomiting, and sneezing

The left and right lobes are each divided into four lobes or parts

Parietal lobe, Frontal Lobe, Temporal Lobe, Occipital Lobe

The deep portion of the brain containing

Thalamus, Hypothalamus, Epithalamus, Ventral thalamus

It serves as relay center for sensations like

Heart rate, blood pressure, temperature control, behavioral response, digestive functions, water and electrolyte balance

Dura Mater

Outer tough fibrous membrane

Pia Mater

Innermost layer containing several blood vessels

The peripheral nervous system is functionally divided into two major divisions

The Sensory or Afferent Division, The Motor or Efferent Division