lunes, 21 de enero de 2008

DIFERENTS TYPES OF DIAGRAM






























































THESE ARE DIFERENTS TYPES OF DIAGRAMS OF THE EYE.

































THESE IS A DIAGRAM OF THE EAR.



AND THIS IS THE LAST DIAGRAM , A DIAGRAM OF THE SKIN.

lunes, 14 de enero de 2008

the hormons

DEFINITION :

A hormone is a chemical messenger that carries a signal from one cell (or group of cells) to another via the blood. All multicellular organisms produce hormones .

PITUITARY:

FUNCTION:

The pituitary gland secretes hormones regulating homeostasis, including trophic hormones that stimulate other endocrine glands. It is functionally connected to the hypothalamus by the median eminence.

THYROID:

FUNCTION:

Controls the rate of at which the body's cells work (the metabolic rate) by the production of thyroxine.

PARATHYROID:

FUNCTION:

Regulate calcium levels and have no effect on metabolism.

THYMUS:

FUNCTION:

stimulate the production of certain infection-fighting cells. It is of central importance in the maturation of T cells.

ADRENALS:

FUNCTION:

help maintain the balance of many body functions. Stress, fasting, temperature changes, infections, drugs.

OVARY:

FUNCTION:

miércoles, 9 de enero de 2008

nervous system functions

Cerebral Cortex :

Function:

Determines Intelligence
Determines Personality
Interpretation of Sensory Impulses
Motor Function
Planning and Organization
Touch Sensation


the hippocampus :

Function:

plays a part in long term memory and spatial navigation.

Amygdala:

Function:

perform a primary role in the processing and memory of emotional reactions.

Thalamus:

Function:

both process and relay sensory information selectively to various parts of the cerebral cortex.
regulate states of sleep and wakefulness.

Pons:

Function:

Arousal
Assists in Controlling Autonomic Functions
Relays Sensory Information Between the Cerebrum and Cerebellum
Sleep

Cerebellum:

Function:

involved in the coordination of voluntary motor movement, balance and equilibrium and muscle tone.