During exercise, sympathetic input to the heart is increased. Stroke volume is often maintained, or even increased, even though
heart rate is also increasing. How is this possible
1 answer:
Answer:
1. Sympathetic input increases ventricular contractility, thereby increasing stroke volume.
2. Sympathetic input decreases conduction time within the heart, decreasing the delay between atrial and ventricular contractions.
3. Sympathetic input increases the speed of ventricular contraction.
You might be interested in
Answer:
I think the answer is capacity to do work
- Under magnification the structure looks clear.
- while viewed in naked eye the structure is viewed unclear.
- Magnification makes the structure to look perfect, smooth and elegant.
- You can understand easily by looking into magnificated image
Answer:
D) The smoke would settle around cities, reducing visibility.
Answer:
Vestigial organs show traits that a species once needed to have to perform certain tasks
Explanation:
I believe it would be a Duplication.