LW Flashcards
(39 cards)
What is the function of the Uterus?
If the ovum is fertilised by the sperm it attaches to the wall of the uterus. If the ovum is not fertilised it travels past the uterus and out of the body. It is home to the developing of the embryo and fetus during pregnancy.
What is the function of the ovary?
Produces the female egg cell called ovum.
What is the function of the fallopian tube?
Ovum travels down the tube from the ovary to the uterus.
What is the function of the Vagina?
Where the penis is placed to ejaculate sperm. It is also where blood flows during the menstrual cycle and the opening where the baby passes during child birth.
What are the female reproductive organs?
The ovary, fallopian tube, uterus and vagina.
What are the male reproductive organs?
The testes, epididymis, vas deferens, prostate gland and urethra.
What is the function of the testes?
They produce sperm and the male hormone (testosterone).
What is the function of the epididymus?
It stores the sperm from the testes and provides an environment for the sperm to mature and acquire the ability to move through the female reproductive system and fertilise an ovum.
What is the function of the vas deferens tube?
Carries the sperm from the epididymus to the prostate gland.
What is the function of the prostate gland?
It secretes liquids which mix with the sperm. The liquids keep the sperm from drying out and help them reach the ovum.
What is the function of the urethra?
The tube in which sperm travel outside the body. Transports urine from the bladder.
What are female and male reproductive cells called? (ovum and sperm)
Gametes.
What is the joining of the ovum and sperm called?
Fertilisation. The cell resulting from this is called a zygote.
What does DNA look like?
A double helix - a ladder that has been twisted.
How many types of cell division are there?
- meiosis and mitosis
What does meiosis do?
Produces ovum and sperm in the reproductive organs.
What does mitosis do?
Produces body cells for growth and repair of tissue.
In what order do meiosis and mitosis occur?
Meiosis must occur first to produce egg and sperm. When ovum and sperm are fertilised during sexual intercourse a zygote is produced and mitosis begins to create a baby.
What are the bases of the DNA?
The bases form the “rungs” of the DNA. T = Thymine, A = Adinine, C = Cystosine, G = Guanine. T and A are a pair, and C and G are a pair.
What is the DNA backbone?
Phosphate and sugar form the backbone of the DNA molecule.
What does DNA stand for?
Deoxyribonucleic acid
What is a genotype?
A particular set of genes an individual is carrying in letters. Eg. Aa, BB, dd
What is a phenotype?
Observable physical or biochemical characteristics of an organism. Eg. Brown eyes, blonde hair.
What influences phenotypes?
Both genes and the environment do, this is called Nature VS Nurture. Environmental factors that affect how these inherited characteristics develop include: - climate, diet, physical accidents, culture and lifestyle.
