### cell | gamete | sperm:

Mature sperm
* are better able to move, find an egg and penetrate it to complete fertilisation
  - highly specialized cells composed of a head, neck and tail region
* is an elongated cell with a head, neck, body, and tail.
* leave the epididymis and enter the vas deferens.

Normal sperm
* are A. haploid.
* have an oval head with a long tail.

Older sperm
* are more likely to experience a nondisjunction event during meiosis.
* can lose their ability to swim well.

Spermatid
* are formed from secondary spermatocytes as a result of second meiotic division
  - gametes
  - present surrounding the lumina
* become spermatozoa.
* differentiate and develop into sperm.
* includes cell membranes
  - chromosomes
  - corpi
  - cytoskeletons
  - lobes
  - nuclei
  - plasma membranes
  - sections
  - vacuoles
* show nuclei smaller than the spermatocytes.
* undergo extensive changes in cell shape and organization in differentiating into sperm.

Gametocyte
* are cells
  - germ cells
  - large and circular or ameoboid
* arise from erythrocytic asexual stages.
* enter mosquito gut.
* have a characteristic crescent shape appearance.
* ingested by the fly vector undergo sporogony to continue the cycle.
* present emerge from their red cell hosts, and become haploid gametes.

Gel cell
* are particularly vulnerable to overheating damage.
* combine sulfuric acid with silica to form a gelatinous consistency between the plates.

### cell:

Germ cell
* are capable of mitosis to perpetuate the cell line and meiosis to produce gametes
  - cells which become the embryo that develops in the womb
  - different from somatic cells in a critical way
  - eukaryotic cells
  - more likely to be killed by DNA damage than to be mutated
  - primitive cells that go to the ovary very early in life
  - reproductive cells that develop into testicles in males and ovaries in females
* are reproductive cells, that is, eggs or sperm
  - either sperm or eggs
  - responsible for transmitting genes to the next generation of an organism
* are the cells in the testes that make sperm and in the ovaries make eggs
  - of the embryo which give rise to gametes
  - that produce sperm or eggs
  - progenitors of all cell types in metazoan organisms
* complete multiple events to form functional oocytes and sperm.
* contain material in the cytoplasm called germ plasm.
* develop at both ends of the egg
  - while the child is still in the womb
* form amid the embryonic endoderm.
* navigate through and along different tissue to reach the somatic part of the gonad.
* occupy a central position in animal development, heredity, and evolution.
* play central roles in animal development, heredity, and evolution.
* produce gametes and are the only cells that can undergo meiosis as well as mitosis.

Giant cell
* Many giant cells are present in the granulomatawhich contain the organisms.
* are fragile and usually die within a day or so
  - often present
  - related to inflammation and healing
  - usually present, but the number is quite variable from case to case
* contain dozens of nuclei and are mixed with small cells.

### cell:

Glia cell
* continue to be produces after birth.
* keep the neurons safe and healthy.
+ Nerve, Nerve Structure: Anatomy of the nervous system
  * Nervous system contains neurons and cells called glia. Glia cells keep the neurons safe and healthy. Neurons take messages to and from the CNS to the rest. The dendrite and axon are fibers that go out from the cell body. Axons take information 'away from' the cell body. Dendrites take information to the cell body.
  * It lets people and animals respond to what is around them. The 'central nervous system' is the brain, the spinal cord, and nerves. It is present in most animals. It is there to coordinate movement, to process the input of the senses, and to make the animals act a certain way. It is made up of neurons and cells called glia among other things. Glia cells keep the neurons safe and healthy.