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PSYCHO15rus [73]
3 years ago
11

The adrenal glands produce hormones that impact short-term responses, including fear and anger.

Biology
1 answer:
xz_007 [3.2K]3 years ago
6 0

Answer:

Epinephrine, also known as Adrenaline

Explanation:

Adrenaline impacts short-term mood and can take seconds to flood your system.

*it may also be cortisol, I'm not sure if there's more context. Cortisol takes longer to work and can have long-term effects.

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Why are flowers important to the life cycle of some plants but not others?
Rama09 [41]
Helps with oxygen and stuff
3 0
3 years ago
The prolonged electrical depolarization of cardiac muscle cells that occurs during contraction is due primarily to the persisten
luda_lava [24]

Answer:

The prolonged electrical depolarization of cardiac muscle cells -that occurs during contraction- is due primarily to the persistent influx of calcium ion

Explanation:

The action potential of the heart muscle is longer with respect to skeletal muscle (around 300 milliseconds), and this is due to the activity of calcium (Ca⁺⁺ ) in the intracellular compartment.

The initial depolarization of cardiac muscle fiber depends on the entry of sodium (Na⁺) into the cell. However, for the action potential to occur and be maintained, Ca⁺⁺  must increase its cytoplasmic levels, which depends on:

  1. The increase in intracellular sodium induces the release of Ca⁺⁺ from the sarcoplasmic reticulum.
  2. Calcium entry from the extracellular space through the voltage dependent Ca⁺⁺ channels.
  3. The entry of extracellular Ca⁺⁺ causes the release of more Ca⁺⁺ ions by the sarcoplasmic reticulum, further increasing its intracellular concentration.

This is how the ion that guarantees the duration of the action potential of the cardiac muscle cell is the Ca⁺⁺.

Learn more:

Calcium, sodium and cardiac muscle cells brainly.com/question/4473795

4 0
3 years ago
The act of breathing raises the blood oxygen level, lowers the blood carbon dioxide concentration, and raises the blood pH. Acco
tino4ka555 [31]

Answer:

A rise in blood carbon dioxide concentration.

Explanation:

The feedback regulation may be defined as the process in which the end product of the metabolic pathway regulates the homeostasis of the body. Two main types of feedback are positive feedback and negative feedback.

The negative feedback mechanism occurs when the end product of the reaction is responsible for the shutdown of the metabolic pathway and decreases its concentration. The breathing is controlled by the negative feedback mechanisms, the increase in carbon dioxide concentration acts as the negative sensor as this sensor is mainly responsible for the increase in amount of oxygen level and maintain homeostasis of the body.

Thus, the correct answer is option (c).

6 0
3 years ago
Four gases are described below:
ser-zykov [4K]

Answer:

Gas B

Explanation:

12 C is the least amount of molecular kinetic energy shown.

5 0
2 years ago
Read 2 more answers
Prokaryotes that obtain their energy from chemical compounds are called _____.
Dvinal [7]

Explanation:

obtain energy from chemotrops. "chemo" means chemical or unnatural therapy..

6 0
3 years ago
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