What is the process of follicular growth? From puberty onwards, every cycle, a group of primordial follicles begins the process of follicular grow...
What is the process of follicular growth?
From puberty onwards, every cycle, a group of primordial follicles begins the process of follicular growth.
The follicular growth process begins embryonically with the migration of primordial cells that differentiate into oogonia.
Between the 6th and 8th embryonic week, oogonia undergo several mitotic divisions and increase in number.
Between the 11th and 24th weeks, they enter a cycle of meiotic divisions, giving rise to primary oocytes whose division is interrupted in prophase I.
The oocytes remain quiescent until ovulation.
These oocytes have an envelope formed by spindle-shaped stromal cells and a basal lamina - this set is called a primordial follicle.
At birth, there are around 2 million primordial follicles that no longer divide.
From puberty onwards, every cycle, a group of primordial follicles begins the process of follicular growth.
The follicular growth process begins embryonically with the migration of primordial cells that differentiate into oogonia.
Between the 6th and 8th embryonic week, oogonia undergo several mitotic divisions and increase in number.
Between the 11th and 24th weeks, they enter a cycle of meiotic divisions, giving rise to primary oocytes whose division is interrupted in prophase I.
The oocytes remain quiescent until ovulation.
These oocytes have an envelope formed by spindle-shaped stromal cells and a basal lamina - this set is called a primordial follicle.
At birth, there are around 2 million primordial follicles that no longer divide.
💡 1 Resposta
Ed 
O processo de crescimento folicular começa com a migração de células primordiais que se diferenciam em oogônias. Entre a 6ª e a 8ª semana embrionária, as oogônias sofrem várias divisões mitóticas e aumentam em número. Entre a 11ª e a 24ª semanas, elas entram em um ciclo de divisões meióticas, dando origem a ovócitos primários cuja divisão é interrompida na prófase I. Os ovócitos permanecem quiescentes até a ovulação. Esses ovócitos têm um envelope formado por células estromais em forma de fuso e uma lâmina basal - esse conjunto é chamado de folículo primordial. Ao nascer, existem cerca de 2 milhões de folículos primordiais que não se dividem mais.
✏️ Responder
Para escrever sua resposta aqui, entre ou crie uma conta
Outros materiais
Perguntas relacionadas
Materiais relacionados
1 pág.
Compartilhar