Pick up the correct sequence of tissues found in the wall of artery:
Correct answer: A. Connective tissue→circular smooth muscles→elastic layer→endothelium
- A. Connective tissue→circular smooth muscles→elastic layer→endothelium
- B. Connective tissue→elastic layer→endothelium→circular smooth muscles
- C. Connective tissue→endothelium→elastic layer→circular smooth muscles
- D. Circular smooth muscles→connective tissue→endothelium→elastic layer
Explanation
The layers of the artery wall, from the inside out, are: Endothelium: This is a single layer of cells that lines the inside of the artery. Elastic layer: This layer is made up of elastic fibers that help to keep the artery open. Circular smooth muscles: This layer is made up of smooth muscle cells that control the diameter of the artery. Connective tissue: This layer is made up of connective tissue that helps to support the artery.
Last updated
About Digestion
The human digestive system covers the organs from mouth to anus, the movement of food, and the mechanical and chemical breakdown of carbohydrates, proteins and fats. It also includes the roles of digestive enzymes, bile, absorption through intestinal villi, and the assimilation of nutrients by body cells.
Practise Digestion
680 free Digestion MCQs from Biology, each with the correct answer and an explanation. Unlimited attempts, no account needed.
Exams that ask Biology questions like this
Biology is on 6 papers prepared for on TestUstad, and all of them draw the same bank, so this question is worth knowing for every one of them.
Related questions
A/An _ is an organism that makes ATP by aerobic respiration if oxygen is present, but is capable of switching to fermentation if oxygen is absent.
A cavity bounded by ribs and diaphragram is called:
A complex cartilaginous structure surrounding the upper end of the trachea:
A condition with abnormal amount of fats is called:
A hormone called _ controls the secretion of gastric juice.