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alisha [4.7K]
3 years ago
12

Guysss I need help !

Biology
1 answer:
yanalaym [24]3 years ago
7 0

Answer:

im sorry but what is that

Explanation:

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How did the frequency of stimulation affect the amount of force generated by the isolated skeletal muscle when the frequency of
Alexxandr [17]

Answer:

When the frequency of stimulation of a muscle increases -without it having the opportunity to relax- a process called summation (addition) occurs, promoting an increase in the generation of force in the isolated skeletal muscle.

Explanation:

Summation is a phenomenon that occurs as a consequence of the arrival of successive stimuli that produce the contraction of the skeletal muscle before it achieves its partial or total relaxation, between subsequent stimuli.

<em>When the summation occurs in the muscle, the force generated on it increases its magnitude proportionally to the number of stimuli received, maintaining the muscle contraction in time</em>.

Tetany is the prolonged contraction of a muscle in an abnormal way, by the summation of stimuli received , as some bacterial toxins can produce. The summation can be temporary -when multiple stimuli reach the muscle in a determined time- or spatial, when the amount of stimuli activates a greater amount of motor units.

Learn more:

Spatial summation in a post synaptic neuron brainly.com/question/9632682

3 0
3 years ago
A 10-year-old child has an unknown infection and will need to provide a urine specimen for culture and sensitivity. To assure th
igomit [66]

Answer:

Obtain specimen before antibiotics are given.

Explanation:

Antibiotics may be defined as the chemicals given to kill or restrict the growth of the bacterial infection. The antibiotics are not available for virus as they can change their DNA.

The sensitivity results can be accurate if the nurse is able to ensure the successful culture of the antibiotics. Throat culture specimen is taken from the pharyngeal area. The aseptic technique can be used by the nurse for obtaining the blood and urine specimen.

Thus, the answer is obtain specimen before antibiotics are given.

7 0
3 years ago
Fossils almost never contain DNA. So how can we know how closely or distantly related fossil organsims are to living organisms
Nostrana [21]
While it's true that Fossils hardly even contain DNA, they can still provide numerous clues in order to identify and verify an organism.

For example, in terms of Dinosaurs, their bones and fossils have provided enough evidence to provide an evolutionary link with modern birds.

Carbon dating is another way to find the age of a fossil which provides more information on it's surrounding habitat and the animals it interacted with.
6 0
3 years ago
What role do nerve cells play in the human body? They allow the body to react to stimuli. They regulate the exchange of chemical
Alex

The right option is; They allow the body to react to stimuli.

Nerve cells, (also called neurons) are specialized cells that are found in their millions in the nervous system. Nerve cells are created to stimulate other cells in the body.  They transmit messages in the form of electrical signals within the body, and they allow the body to respond to stimuli. Neurons are grouped into three types which are; sensory neurons, motor neurons and association neurons.

5 0
3 years ago
Read 2 more answers
The nights are drawing in and its getting dark, create a safety poster for children
kiruha [24]
What r we suppose to be putting on the poster? What age range is this for? Young children or teenagers?
7 0
3 years ago
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