Psych, Chpt. 2

Dizygotic twins ...

DEVELOP WHEN TWO OVA ARE FERTILIZED.

People with ____ syndrome have an extra chromosome on the 21st pair

DOWN

A neuron can fire up to a limit of about ____

400

If someone steps on your toes, resulting in pain & the movement, which describes the process?

AFFERENT NEURONS TRANSMIT THE SENSATION OF PAIN TO THE SPINAL CORD AND TO THE BRAIN FOLLOWED BY EFFERENT NEURONS SENDING THE MESSAGE TO YOUR FOOT TO MOVE

The ____ nervous system regulates the glands & involuntary activities such as heartbeat & digestion.

AUTONOMIC

When Charlotte hears something embarrassing, she blushes. Being a student of psychology, she knows that this condition is controlled by the ____

AUTONOMIC NERVOUS SYSTEM

Neurons have cell body, or soma; dendrites, which receive "messages,"; & a(n) ____, which extends from the cell body & transmits messages.

AXON

The brain structure called the ____ is involved in balance & coordination.

CEREBELLUM

"Messages" travel within neurons by means of ____ & from neuron to neuron by means of ____

ELECTRICITY & NEURON-TRANSMITTERS

The concept of a struggle for ____ lies at the core of the theory of evolution.

EXISTENCE

____ are the most basic building blocks of heredity.

GENES

Wernicke's aphasia causes ____

IMPAIRMENT OF ONE'S ABILITY TO COMPREHEND SPEECH & TO THINK OF THE PROPER WORDS TO EXPRESS HIS OR HER OWN THOUGHTS

Stereotypical behavior patterns that have evolved within a species are called ____

INSTINCTS

The behavior of ____ twins is of special interest of psychologists because their genetic endowment is the same.

MONOZYGOTIC** (IDENTICAL)**

The axons of many neurons have a fatty insulating sheath called ____

MYELIN

Neurons transmit messages to other neurons by means of chemical substances called ...

NEURO-TRANSMITTERS

It is theorized that people with the psychological disorder called ____ apparently overutilize the neuro-transmitter dopamine.

SCHIZOPHRENIA

An axon's length can range from a few millimeters to a ____

SEVERAL FEET

An editor gets so upset that she is late in working on a manuscript that she throws up her lunch. This probably occurred because of activity of the ____

SYMPATHETIC DIVISION OF HER AUTONOMIC NERVOUS SYSTEM

Ellen loses weight & becomes somewhat agitated. Her doctor is most likely to theorize that she is suffering from a deficiency of ____

THYROXIN