You never put any of the answers
A. Pacemaker cells located in the atria fire before the pacemaker cells in the ventricles. B. It takes time for hormones to diffuse from the atria to the ventricles to trigger contraction. C.The electrical signal generated in the right atrium is delayed at the AV node before passing to the ventricles. D.The ventricular muscle cells contract more slowly than the atrial muscle cells.
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
#SPJ4
1. Do not lift weights too heavy for u or u might get injured. Always warm up ur muscles
2. Lose weight
Better cardio
Build muscle
Answer:The nervous system takes in information through our senses, it then processes it and then triggers a reaction, so when you see your favorite celebirty youd feel a jolt of excitement and adrenaline, the adrenaline makes you feel confident, excited, and energetic. your brain sends a signal to your body to move towards the person and then your brain is like “bro go speak” and so your diaphragm and pushes air up to your voice box then voice cord Vibarates and boom voice
Explanation: