Can you help me with questions 21 and 22 States)NP21. Name the effect of the following factors on heart rate:Norepinephrine (hormone or neurotransmitter)Epinephrine (hormone)Acetylcholine (neurotransmitter)Low O2 levelsCa*2 channel blocker medicationFactorChannel22. State the channels involved during an action potential in cardiac CONTRACTILEcells and then describe in which direction each ion moves across the channel whenthe channel fully opens.Ilon?Influx or Efflux?1.2.3.4.Increases or Decreases HeartRate?23. Be able to draw an action potential in a cardiac CONTRACTILE cell. Include theSEP9OFocus

Answered: States) N P 21. Name the effect of the…

Human Anatomy & Physiology (11th Edition)

11th Edition

ISBN:9780134580999

Author:Elaine N. Marieb, Katja N. Hoehn

Publisher:Elaine N. Marieb, Katja N. Hoehn

Chapter1: The Human Body: An Orientation

Section: Chapter Questions

Problem 1RQ: The correct sequence of levels forming the structural hierarchy is A. (a) organ, organ system,...

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Related questions

Question

Can you help me with questions 21 and 22

States)
N
P
21. Name the effect of the following factors on heart rate:
Norepinephrine (hormone or neurotransmitter)
Epinephrine (hormone)
Acetylcholine (neurotransmitter)
Low O2 levels
Ca*2 channel blocker medication
Factor
Channel
22. State the channels involved during an action potential in cardiac CONTRACTILE
cells and then describe in which direction each ion moves across the channel when
the channel fully opens.
I
lon?
Influx or Efflux?
1.
2.
3.
4.
Increases or Decreases Heart
Rate?
23. Be able to draw an action potential in a cardiac CONTRACTILE cell. Include the
SEP
9
O
Focus

Expert Solution

Step 1

Hormones are chemical messengers that bind to their specific receptors that are distantly located. These hormones are secreted by the endocrine glands and travel through the bloodstream. Hormones may either interact with the cell surface receptors or the receptors that are located in the cytosol/nucleus.