respiratory
reproductive
urinary
cardiovascular
100

these organs are responsible for oxygen intake in the body

lungs

100

male gamete

sperm cell

100

this organ holds urine within the body

Bladder

100

blood vessels that flow towards the heart 

veins

200

the hollow space found behind the nose

nasal cavity

200

female gamete

ovum

200

these tubes transport urine from the kidneys to the bladder

ureters

200

blood vessels that flow away from the heart

artery

300

this structure holds the voicebox

the larynx 
300

when two haploids meet and combine this forms

zygote

300

these organs are responsible for the cleaning of the blood, the right one is lower.

kidneys

300

these blood vessels are responsible for gas exchange

capillaries

400

this structure resembles a tree and is the pathway for oxygen within the lungs

bronchial tree

400

this occurs when the blastocyst attaches to the endometrium

implantation

400

this is a structure that drains into the minor calyx

collecting duct

400

oxygenated blood flows through these two chambers of the heart

the left atrium and left ventricle

500

these are responsible for the gas exchange within the lungs

alveoli

500

this 16 celled precursor to a blastocyst is named after the mulberry

morula

500

this bundle looking structure is where filtration of blood occurs

Glomerulus

500
this valves name is related to the number 3

tricuspid valve

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