Endocrine System
Immune System
Nervous System
Reproductive System
The Brain
100
It controls your metabolism. Too much, and you'll feel jittery.

What is the thyroid gland?

100

The first line of defense.

What are the tonsils and adenoids?

100

The components of the Central Nervous System

What are the brain and the spinal cord?

100

This contains the genetic material from the mother or the father.

What is a haploid?

100

It is made up of 4 lobes.

What is the cerebrum?

200

Chemical messengers that affect the body's reaction to certain stimuli.

What are hormones?

200

As well as filtering blood, this organ traps bacteria.

What is the spleen?

200

Another name for efferent nerves.

What are motor nerves?

200

The name for the fertilized ovum.

What is a zygote?

200

The part of the brain whose main functions are to control balance and coordination.

What is the cerebellum?

300

The gland that controls your circadian rhythms

What is the parathyroid?

300

A gland you'll find in children, but not in seniors.

What is the thymus?

300

Involuntary bodily functions. 

What are autonomic functions?

300

The group of cells that imbeds into the uterine lining.

What is a blastocyst?
300

This lobe focuses on memory, sound and speech.

What is the temporal lobe?

400

Need to get ready to fight or run away - we've got you covered.

What are the adrenal glands?

400

What the T cells form after recognizing a surface protein as a pathogen.

What are B- cells?

400

A system of afferent nerves.

What is the CNS?

400

Less effective in mammals, it nurtures the growing fetus until the umbilical system is established.

What is the yolk sac?

400
This divides the brain into 2 hemispheres.

What is the corpus callosum?

500

Monitors and controls the amount of sugar being absorbed or released by the cells.

What is the pancreas?

500

It does not contain red blood cells or platelets, but this fluid is crucial to your immune system.

What is lymph?

500

The part of the PNS that restores your body to equilibrium after a threat has passed.

What is the parasympathetic nerve system?

500

Elevated levels of this hormone indicate an egg has been fertilized.

What is HCG?

500

The gland that controls your moods, sleep and appetite.

What is the hypothalamus?

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