<h2>Skeletal & Cardiac Muscle</h2>
Explanation:
- A skeletal muscle is a contractile organ that is directly or indirectly attached to bone. Skeletal muscles move the body. Skeletal muscle contractions pull on tendons, which are attached to bones. If contraction of the muscle causes the muscle to shorten, the bone and, thus, the body part will move. For example, the biceps brachii is attached to the shoulder and the forearm bones
- Contraction and, thus, shortening, of the biceps brachii pulls on the tendons attached to the bones. Skeletal muscle contraction, however, doesn't always result in the movement of a body part
- Contraction of smooth muscles controlled by autonomic nervous system and contraction can be initiated by electrical or chemical signals. Actin is plentiful, lacks troponin
- Skeletal muscle is controlled by somatic motor division and always begins with an action potential
Answer:
Jesse is risking blood pressure by taking methamphetamines.
Explanation:
Methamphetamine is a drug which effects the central nervous system. It gives brain a constant rush of dopamine. But abusing It puts the user to a number of side effects such as high blood pressure, fast breathing, and rapid heartbeat.
Methamphetamine can be usually consumed through a number of ways such as smoking, taking a pill, snorting, using injections in which the powder has been dissolved in alcohol or water.
18: D, homologous
20: B, DNA
I can’t see 17 or 19!
