11-14-2011 Cell Specialization

11-14-2011 Cell Specialization • Drill – What are some of the differences between a liver cell and a muscle cell? • Quiz tomorrow on organelles, cell motility, cell membrane, and cell specialization • HW - Worksheet

How many different types of cells are there in the human body?

Neuron • Receives and sends messages • Part of the nervous system • VIDEO • What would neurons have on their membranes? • What organelle would neurons have a lot of?

Sperm and Egg • Reproduction • Sperm uses its ________ to swim to the egg. • What organelle would a sperm cell have a lot of? • VIDEO

Muscle Cells • Stretch and contract to make body movements • Every movement in your body is the result of a muscle cells contracting and another set expanding.

Red Blood Cell • Picks up oxygen from the lungs and delivers it around the body. • Carbon monoxide/cyanide

Cones • Cell in the back of your eye that detects color.

Rods • Cell in the back of your eye that detects light, but isn’t sensitive to color.

Thermosensitive Nerve Cells • Primary function is to detect temperature • Also detect pain • Where are these cells located?

Skin Cells • Provide protection and a barrier to the outside world • The cells on the outside of your skin are dead

Absorptive Cells • These cells absorb nutrients from food. • Where do you think these cells are located?

These are all examples of differentiated cells. What’s an example of an UNdifferentiated type of cell?

11-14-2011 Cell Specialization