Answer:
Step-by-step explanation:
The muscle of the heart are called Cardiac muscles,They are made up unicellular cells,which are mono nucleated ,and well branched, these group of cells are connected to one another by intercalated discs.The latter are made up gap junctions. these are special channels between cells for intercelular communications;as transfer of ions and molecules.
In cardiac cells the gap junctions of the interac;alated disc facilitated influx of Na+ for deplolarization. This ensure transmission of action potential for syncytium contractions.Therefore these muscles contract for pumping of blood by the heart to the body,
The skin is made up of three layers the outermost epidermis, the middle layer dermis and the innermost layer hypodermis. The epidermis is also known as the cornified layer.It is made up of dead cells. Therefore it serve as a barriers for preventing the entry of harmful microorganisms into the dermis below. These dead cells also resist tear and abrasion to the skin.
The Dermis which forms the next layer contains the sebaceous gland which contain sebum, this is needed for making the skin supple.it also contains hair follicles where hairs grow from, and tough connective tissue. The relation of these structure to function is the ability of the hair to regulate body temperature by raising and lowering of the hair papilla. During cold weather this is raised to conserve heat, and during heat the hairs lie parallel to the skin to aid heat losses.
The hypodermis is the deepest part of the skin layers rich in connective tissues and adipose fat tissues. It is the site for fat storage in the skin. Therefore this latter characteristics ensure provision of heat, insulation to the skin.(Since the primary function of fat is to generate heat). Other structure are blood vessels and sensory nerve endings for sensory stimulation.