spermatogenesis
Making male gametes
Spermatogenesis is the biological process by which sperm cells are produced in the testes.
The process begins at puberty and continues throughout a male's life, taking roughly two to three months to complete each cycle.
The term appears primarily in biology and medicine: Chemotherapy can disrupt spermatogenesis.
Gamete-producing cell division
- chromosomesGene-bearing nuclear structures
- prophaseFirst mitotic stage
- metaphaseChromosomal equator formation stage
- anaphaseChromatid separation stage
telophase · synapsis · crossing over · haploid · bivalent · chiasma · centromere · disjunction
Chief male sex hormone
- LHGonadotropin from pituitary
- gonadotropinHormone stimulating reproductive glands
- hypothalamusSubthalamic regulatory brain region
- pituitary glandBrain-base hormone producer
androgen · inhibin · endocrine · negative feedback · puberty · estradiol · prolactin
Male reproductive glands
- epididymisSperm storage and maturation site
- basement membraneExtracellular matrix beneath epithelia
- lumenLight output measure
Inability to impregnate
- andrologyMale reproductive medicine
- subfertilityDiminished reproductive capacity
Whiplike cellular appendage
- headUppermost body part
- tailRear animal appendage
- motilitySelf-generated movement capacity
- fertilizationGamete fusion creating zygote
hyperactivation · centriole · plasma membrane · nuclear envelope · chromatin
Single chromosome complement
- diploidTwo complete chromosome sets
- genomeOrganism's total hereditary material
- DNA replicationDuplicating genetic material
- imprintingRapid early learning attachment
epigenetics · gene expression · transcription · Y chromosome
Nuclear division producing identical cells
- differentiationRecognizing meaningful differences
- maturationProcess of becoming complete
meiosis
Gamete-producing cell division
- chromosomesGene-bearing nuclear structures
- prophaseFirst mitotic stage
- metaphaseChromosomal equator formation stage
anaphase · telophase · synapsis · crossing over · haploid · bivalent · chiasma · centromere · disjunction · tetrad
testosterone
Chief male sex hormone
- LHGonadotropin from pituitary
- gonadotropinHormone stimulating reproductive glands
- hypothalamusSubthalamic regulatory brain region
pituitary gland · androgen · inhibin · endocrine · negative feedback · puberty · estradiol · prolactin
testes
Male reproductive glands
- epididymisSperm storage and maturation site
- basement membraneExtracellular matrix beneath epithelia
- lumenLight output measure
male infertility
Inability to impregnate
- andrologyMale reproductive medicine
- subfertilityDiminished reproductive capacity
flagellum
Whiplike cellular appendage
fertilization · hyperactivation · centriole · plasma membrane · nuclear envelope · chromatin
haploid
Single chromosome complement
- diploidTwo complete chromosome sets
- genomeOrganism's total hereditary material
- DNA replicationDuplicating genetic material
imprinting · epigenetics · gene expression · transcription · Y chromosome
mitosis
Nuclear division producing identical cells
- differentiationRecognizing meaningful differences
- maturationProcess of becoming complete