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ohaa [14]
3 years ago
13

Muscles move bones by doing what?​

Medicine
1 answer:
Rufina [12.5K]3 years ago
8 0
Muscles move bones by contracting and relaxing the muscle cells, which are connected to tendons. Tendons are a fibrous connective tissue that connects bone to muscle, so it is part of the process of muscle-bone movement. Muscle fibers contract, which shortens the muscle and uses the tendon to move the bone, the same goes for relaxing the muscle.
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An outbreak of salmonellosis occurred after an epidemiology department luncheon, which was attended by 485 faculty and staff. As
Julli [10]

Answer:

28.2%.

Explanation:

Attack rate of any pathogen describes the speed or morbidity by which the new or emerging population is at risk by the attack of the pathogen.

The attack rate can be calculated by the formula:

Attack rate = people affected or at the risk of infection / Total population.

65 people are affected and 72 people also shows the symptoms.

Attack rate =  65 + 72 / 485

Attack rate = 137 / 485

Attack rate = 0.28.

The attack rate percent = 0.28 × 100 = 28%.

Hence, the answer is 28%.

4 0
3 years ago
What have one-way valves just like valves of the heart
GREYUIT [131]

Answer:

The heart consists of four chambers, two atria (upper chambers) and two ventricles (lower chambers). There is a valve through which blood passes before leaving each chamber of the heart. ... They act as one-way inlets of blood on one side of a ventricle and one-way outlets of blood on the other side of a ventricle.

Explanation:

6 0
3 years ago
How many chromosomes in a human muscle cell? ______ A red blood cell? ______-
Travka [436]

Answer:

Explanation:

In humans, each cell normally contains 23 pairs of chromosomes, for a total of 46.

5 0
3 years ago
A spermatogonium in males is equivalent to _____________ in females.
VashaNatasha [74]

Answer:

The answer is C: primary oocyte

Explanation:

Ovogenesis is the process by which the ovary gives rise to a mature ovum (oocyte). The primary oocyte is the first to form during ovogonia, once the process of meiosis begins. It is compared with spermatogonium as it is also the initial phase for sperm formation.

7 0
3 years ago
Jan just ate a meal that was extremely high in fat. Which accessory organs of the digestive system would be activated
MakcuM [25]

Answer:

Gallbladder And liver

Explanation:

Accessory Organs of Digestion. Liver. This is a very busy organ with lots of functions, but as far as digestion is concerned, it produces bile, which is secreted into the small intestine to help break down fats and oils. Gallbladder. A small bag-like organ that stores the bile until it's necessary.

7 0
2 years ago
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