Answer:
Softer? I hope this helps :)
Explanation:
1) carries food and oxygen to the different cells of the body; 2) carries body wastes away; 3) protects the body from diseases; and 4) serves as the body's defense system.
it is one of the transport systems of the human body that is composed of the heart, the blood and the blood vessels. Its functions include: 1) carries food and oxygen to the different cells of the body; 2) carries body wastes away; 3) protects the body from diseases; and 4) serves as the body's defense system.
Consumers. Obviously all animals are not b or c as there are animals that are both. Plants are producers as they produce energy, and animals consume the energy making them consumers.
Answer:
B. Neurons are cells that conduct electrical impulses.
Explanation:
Red blood cells carry oxygen throughout the body. White blood cells protect against pathogens and aid in blood clotting after injury. Blood cells cannot contract.
Neurons generate and conduct electrical impulses. So this one is correct.
Epithelial cells line the cavities and surfaces of blood vessels and organs, protect underlying tissue, regulate the exchange of chemicals, and secrete various substances. They do not react to stimuli, however neurons do.
Smooth muscles helps the skeleton move, smooth muscle is found in blood vessels and some organs, and cardiac muscle helps the heart beat and pump blood. They are however, not components of blood.
Answer:
Tendon sheaths <u>act as friction-reducing structures.</u>
Explanation:
Tendon sheaths are fibrous tissue that is around tendons to protect and make the movements of these smoother. For example, they reduce the friction of the flexors and extensors tendons of the hand. These are tendons that we constantly use to open and close our hands when we want to grab objects. Without the sheath, the tendons will not move easily, and due to the excessive use, there can be inflammation.
The sheats have two layers, one internal, which is a synovial one that produces synovial fluid to lubricate the tendon, and the external, which is a fibrous layer.
