A concussion, as found on Google, is a "temporary unconsciousness caused by a blow to the head.", which means a really hard hit to the head, and then a knock out or a blackout
Some symptoms that are usually associated with a concussion can be but are not limited to: headaches, memory loss (if severe), nausea, vomiting, slurred speech, confusion, and fatigue. There can also be sleep disturbances, sensitivity to any type of change, such as air or light, and disorders of the 5 senses (sound, sight, touch, smell, and taste).
Answer:
Extend, flex.
Explanation:
Muscle can be defined as the soft tissue that helps in the movement of the body and controls the body coordination. Three main types of body tissue are smooth muscle, cardiac muscle and skeletal muscle.
The muscles also perform the extension, flexion, adduction and abduction of the body parts. The anterior surface of the muscles located on thigh hwlps in the body extension. The muscles located on the posterior surface of the thigh helps in the flexion of the knee.
Thus, the correct answer is extend, flex.
Physical effects of alcohol are felt as early as a blood alcohol concentration of 0.03-0.05%.
<h3>What is Alcohol?</h3>
This is referred to a substance which contains ethanol and is derived from the fermentation of sugars. It has an intoxicating effect and is also regarded as a psychoactive substance.
When consumed by individuals, effects can be felt when the blood concentration is about 0.03-0.05% thereby leading to a reduction in coordination of the body cells etc.
Read more about Alcohol here brainly.com/question/947751
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