HI Wendy, Psuedostratified columnar ET contains a few different types of true columnar cells that touch both basal and apical surfaces...... BUT it also contains some cells that are shorter, touching only the basement membrane and not reaching the apical surface. One of those shorter cell types is known as a basal cell and serves as stem cells for replacing the other cells of this tissue. The basal cells' nuclei are close to the basement membrane while other cells' nuclei are at various levels, giving the appearance of multiple layers but without the true stacking seen in a real stratified ET.
Thank you for this. You present my favorite style of teaching.
Thanks doc
thank you
Would someone tell me what does she mean at 4:54? “Check out your lab handout” I would love to access this contents. How can I buy it? , thanks
Nice
Are the handouts that you refer to available for printing?
HI Wendy,
Psuedostratified columnar ET contains a few different types of true columnar cells that touch both basal and apical surfaces...... BUT it also contains some cells that are shorter, touching only the basement membrane and not reaching the apical surface. One of those shorter cell types is known as a basal cell and serves as stem cells for replacing the other cells of this tissue. The basal cells' nuclei are close to the basement membrane while other cells' nuclei are at various levels, giving the appearance of multiple layers but without the true stacking seen in a real stratified ET.