Tissues

What are the basic types of tissue found in animals? answerEpithelial tissue, connective tissue, muscle, nerves.	Which primary germ layers are each of the above tissues derived from? answerEpithelial tissue is derived from ectoderm, mesoderm, and endoderm, depending on which organ or system it is a part of.Connective tissue is derived from mesoderm.Muscle is derived from mesoderm.Nerves are derived from ectoderm.
Name the different types of muscle. answerSkeletal muscle, cardiac muscle, smooth muscle.	Which ion enters the sarcoplasm during depolarization of a muscle fiber and brings about muscle contraction? answerCa++