1. Red Blood Cells (Erythrocytes)
* Function: Transport oxygen from the lungs to the body's tissues and remove carbon dioxide from the tissues to the lungs.
Specialized Features:
* Lack a nucleus: This allows for more space to carry hemoglobin, the protein that binds oxygen.
* Biconcave shape: This shape increases surface area for efficient gas exchange.
* Contain hemoglobin: This iron-containing protein binds to oxygen in the lungs and releases it in the tissues.
2. Neurons
* Function: Transmit information throughout the body in the form of electrical and chemical signals.
Specialized Features:
* Long Axon: This extension carries signals away from the cell body.
* Dendrites: These extensions receive signals from other neurons.
* Synapses: These specialized junctions allow communication between neurons.
* Myelin Sheath: This fatty covering speeds up signal transmission along the axon.
