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In the proximal convoluted tubule are the Na K pumps located only on the apical sides of the epithelial membranes?
No, Na+K+ pumps are located on both the apical and basolateral sides of the epithelial membranes in the proximal convoluted tubule. This pump helps maintain the concentration gradient of sodium and potassium ions across the tubular walls, which is essential for reabsorption of these ions and water from the tubular fluid.
Absorption of glucose from the gut lumen depends on?
the sodium-potassium pump in the basolateral membrane of the epithelial cell, cotransporter proteins in the apical membrane of the epithelial cell, and higher sodium ion concentration in the lumen than in the epithelial.
What causes apical dominance?
Apical buds are those located at the end of stems; lateral buds are located in the leaf axils along the length of the stems. Apical dominance occurs when a branch tends to get longer and longer without sending off branching shoots. This occurs because of a substance called auxin which is produced in the apical buds and which inhibits growth of stems from the lateral buds.
How do glucose molecules cross a plasma membrane on the apical side of epithelial cells?
Glucose molecules cross the plasma membrane on the apical side of epithelial cells through facilitated diffusion using glucose transporters such as GLUT1 and GLUT2. These transporter proteins help the glucose molecules move down their concentration gradient into the cell.
What is the function of a apical bud on a plant?
The apical bud is responsible for the growth and development of the main shoot of a plant. It produces hormones that inhibit the growth of lateral buds, directing the plant's energy towards vertical growth. This helps the plant to grow taller and reach for light, supporting its overall health and development.
The main factor of how sodium can enter on the apical side is?
None of the above (pressure, potassium, sucrose)
In the proximal convoluted tubule are the Na K pumps located only on the apical sides of the epithelial membranes?
No, Na+K+ pumps are located on both the apical and basolateral sides of the epithelial membranes in the proximal convoluted tubule. This pump helps maintain the concentration gradient of sodium and potassium ions across the tubular walls, which is essential for reabsorption of these ions and water from the tubular fluid.
Absorption of glucose from the gut lumen depends on?
the sodium-potassium pump in the basolateral membrane of the epithelial cell, cotransporter proteins in the apical membrane of the epithelial cell, and higher sodium ion concentration in the lumen than in the epithelial.
What tissue is described as an apical surface and a basement membrane?
The tissue described as having an apical surface and a basement membrane is epithelial tissue. Epithelial tissue covers body surfaces, lines cavities and organs, and forms glands. The apical surface is the top layer that faces the exterior or the lumen of a cavity, while the basement membrane provides support and anchors the epithelium to underlying connective tissue.
What is an apical germ pore?
An apical germ pore is a small pore in the outer wall of a fungal spore, located at the spore apex and used for germination.
Where is the apical pulse located?
5th intercostal space at the midclavicular line
What is an apical cell?
An apical cell is the primary cell located at the tip of a plant shoot or root. It is responsible for the growth and development of the plant by producing new cells through cell division. The apical cell is important for determining the overall shape and structure of the plant.
What causes apical dominance?
Apical buds are those located at the end of stems; lateral buds are located in the leaf axils along the length of the stems. Apical dominance occurs when a branch tends to get longer and longer without sending off branching shoots. This occurs because of a substance called auxin which is produced in the apical buds and which inhibits growth of stems from the lateral buds.
Location of nucleus in columnar epithelial cell?
The nucleus in a columnar epithelial cell is typically located towards the base of the cell, closer to the basement membrane. This positioning allows for efficient packing of organelles in the apical region of the cell, facilitating secretion and absorption functions of the cell.
How do glucose molecules cross a plasma membrane on the apical side of epithelial cells?
Glucose molecules cross the plasma membrane on the apical side of epithelial cells through facilitated diffusion using glucose transporters such as GLUT1 and GLUT2. These transporter proteins help the glucose molecules move down their concentration gradient into the cell.
How does vasopressin work?
Vasopressin binds to the membrane receptor of a cell located on the collecting duct. The receptor activates cAMP second messenger system The cell inserts aquaporin-2 water pores into the apical membrane of the collecting duct cell. Water is absorbed by osmosis into the blood. This kicks in when your body needs to reabsorb more water.
Is the Apical surface of the epithelium the deepest layer of cells?
No, the apical surface of the epithelium is not the deepest layer of cells; rather, it is the outermost layer that faces the lumen or external environment. The deepest layer of epithelial cells is referred to as the basal layer, which rests on the basement membrane. The apical surface is involved in functions such as absorption, secretion, and sensation, depending on the type of epithelium.
