human anatomy Flashcards
What is excretion ?
It’s removing the toxic waste, materials and any extra substance
What is urea ?
Urea is a type of substance where the body has excess protein and the liver will change into urea
How is urea made ?
Urea is made in the liver then it’s excreted from the kidney
Describe the excretion system
kidney→ureter →bladder →urethra
Describe what happens the excretion system
Kidney : filters the blood→ureter:carries the urine away from the kidney to the bladder→Bladder :stores the urine → Urethra:removes the urine out of the body
Write 3 examples of substance in excess
It’s carbon dioxide ,urea and excess water
What is urine made of?
It’s made of water and urea
What is DNA?
The DNA contains cell activity and determine the features
What are genes made of ?
It’s made of many of each different many chromosomes
What are chromosomes made of ?
It’s made of DNA it contains genes
Where are chromosomes found in?
It’s found in the nucleus
What are gametes?
They are sex cells.
What are the 2 types of gametes?
Male sex cells and Female sex cells
What is fertilization ?
It’s a process where the sperm cell with an egg cell to make Zygote
What are the 2 types of sex chromosomes ?
X and y chromosomes
