Control and Communications Flashcards
Chromosomes contain…
Genetic material (DNA) that give us individual characteristics
A section of a chromosome is called…
A gene
Every species of living organism has a…
Characteristic number of chromosomes called its Chromosome Complement
Humans have…
Dogs have…
Potatos have…
H: 46 Chromosomes, 23 Pairs
D: 78 Chromosomes, 39 Pairs
P: 24 Chromosomes, 12 Pairs
A cell that has two matching sets of chromosomes is known as…
Diploid
Normal body cells contain two matching sets of chromosomes so they are…
Diploid
Sex cells only contain a single set of chromosomes so they are called…
Haploid
Sex cells must be haploid because…
The nuclei of two haploid sex cells fuse together during fertilisation in order to produce a diploid zygote
Cell lifespans include…
Skin Cells: two weeks
Sperm Cell: 3 days
Brain Cell: your lifetime
The Nervous System is composed of two parts…
The Central Nervous System (CNS): brain and spinal cord
Peripheral Nerves: connect the CNS to all parts of the body
The brain is composed of…
Several complex parts all working together in order to send and receive information from around the body
The medulla is found… and controls…
At the top of the spinal cord… heart rate, breathing rate and peristalsis
The cerebrum is… and is responsible for…
The large folded area of the brain… conscious thoughts, reasoning, memory and emotion
The cerebellum is found… and controls…
At the rear of the brain… balance and coordinated movement
Sensory Receptors are found… these detect…
In all parts of the body… sensory stimuli from the environment and produce an electrical signal that is picked up by Sensory Neurons and carried to the Central Nervous System