ANAT 1010 Lecture Notes - Lecture 11: Cardiac Muscle, Autonomic Nervous System, Skeletal Muscle
6 Feb 2020
School
Department
Course
Professor
Document Summary
The three types are skeletal, cardiac, and smooth muscles. They share some properties, but they di er in histology, location, and how they are controlled by the nervous and endocrine systems. It is located attached to the bone, skin, or fascia. Each striated skeletal muscle ber has alternating light and dark bands visible when examined under the microscope. The skeletal muscle has voluntary or conscious control of contraction and relaxation. It is located only in the wall of the heart. Cardiac muscles are striated and has the same arrangement of bands as the skeletal muscle. The bers (cells) are connected by intercalated discs with gap junctions. It is authorhythmic because of built in pacemaker that initiates contraction. It is regulated by hormones or nerve impulses from the autonomic nervous system to speed up or slow down the rate of contraction.
