Most crustaceans are aquatic, or reside in water habitats.
Instead of vertebrae, crustaceans have a hard outer shell called an exoskeleton.
They also have segmented bodies, with appendages extending from each segment.
Here's a fun fact: crustaceans have single-chambered hearts and an open circulatory system.
Because of their resemblance and relationship to prehistoric reptiles and many people think that birds descended from dinosaurs
Answer:
The correct answer is the second option axon.
Explanation:
Neurons or nerve cells is a cell that transfers electrical signals. Nerve cells are the structural and functional units of the human nervous system. Every nerve cell is made up of 3 parts, a cell body called soma, dendrites and an axon.
The soma or cell body forms an elongated projection, called axon. Axon is responsible for sending electrochemical signals with the help of elaborate ion transport. Some nerve cells have a myelin sheath covering around the axon to facilitate signals faster.
Thus, the correct answer is the second option, Axon.
Answer:
loose connective tissue
Explanation:
A layer of tissue lies immediately below the dermis of vertebrate skin. It is often referred to as subcutaneous tissue. The hypodermis consists primarily of loose connective tissue. It contains larger blood vessels and nerves than those found in the dermis.
i hope this helps! :)
