Reproductive System
This organ produces millions of sperm cells and the hormone testosterone.
testes
This is the total length of the human gestation period.
40 weeks
This is the body's control center — it receives, processes, and responds to information using neurons.
Nervous System
These branch-like arms on a neuron receive signals from nearby neurons.
Dendrites
This is the term for a gene pair where both alleles are the same, such as TT or tt.
homozygous (purebred)
This is the path sperm travels after leaving the testes, in order.
testes → sperm duct → glands → urethra → outside the body
The developing baby is called this from fertilization through the first 8 weeks.
Embryo
The brain and spinal cord make up this division of the nervous system.
Central Nervous System
These branch-like arms on a neuron receive signals from nearby neurons.
Myelin Sheath
This is the physical characteristic you can see, as opposed to the actual letters in the gene pair.
phenotype
Fertilization normally takes place in this structure, NOT the uterus.
What is the fallopian tube?
During Month 5, the mother feels this for the first time.
Baby moving and kicking
The left hemisphere of the brain controls this side of the body and is responsible for calculating, reasoning, and speech.
The right side of the body
A signal travels through a neuron in this order.
dendrites → soma → axon → synapse
This is the physical characteristic you can see, as opposed to the actual letters in the gene pair.
25%
This temporary organ delivers oxygen and nutrients to the fetus, removes waste, and does NOT mix the mother's blood with the baby's blood.
Placenta
This fluid cushions and protects the fetus inside the uterus.
Amniotic Fluid
This part of the brain automatically controls breathing, digesting, and pumping blood.
Encephalic Trunk
This is the tiny gap between two neurons where chemicals pass the signal from one neuron to the next.
Synapse
This type of mutation happens in egg or sperm cells and CAN be passed on to children.
Reproductive Cell Mutation
This hormone, made in the pituitary gland, triggers the release of a mature egg from the ovary
Lutenizing hormone
This ring of muscle keeps the baby in the uterus during pregnancy and opens during labor to allow the baby to pass through.
Cervix
This lobe of the brain is responsible for memory and face recognition.
Temporal Lobe
This type of neuron carries instructions FROM the brain TO the muscles.
This disease causes red blood cells to become crescent-shaped so they get stuck in blood vessels and cannot carry oxygen properly.
Sickle Cell Disease