🏷️ LIMITED TIME OFFER: GET 20% OFF GRADE+ YEARLY SUBSCRIPTION →
Log in
Biology
3
answers
0
watching
46
views

why it is possible to record the electrical activity of skeletalmuscle fibers by placing electrodes on the surface of the skin.

Watch
3
answers
0
watching
46
views

For unlimited access to Homework Help, a Homework+ subscription is required.

Unlock all answers

Get 1 free homework help answer.
Already have an account? Log in
Share
Already have an account? Log in
Share
Sixta Kovacek
Sixta KovacekLv2
28 Sep 2019
Already have an account? Log in
Share

Related textbook solutions

Molecular Cell Biology
8 Edition,
Lodish
ISBN: 9781464183393
Biology: Science for Life with Physiology
6 Edition,
Belk
ISBN: 9780134555430
Concepts of Biology
OER Edition,
Openstax
ISBN: 9781938168116
Biology
2nd Edition, 2013
Openstax
ISBN: 9781947172517
Essentials of Biology
5 Edition,
Mader
ISBN: 9781259660269

Related questions

I learned that the adrenal medulla releases epinephrine, whichis a vasodilator of the vessels that lead to the skeletalmuscle.

I also learned that somatic nervous system only usesAchetycholine as its hormone (not epinephrine).

I also learned that the somatic nervous system controls skeletalmuscle.

So, why is epinephrine not considered a part of the somaticnervous system hormones, if it is controlling the skeletal muscle?What is wrong here?

ANSWER ALL

CELL AND MOLECULAR


1 When running DNA samples, the comb should ideally be placed?

A) in the gel near the positive electrode of the electrophoresis

B) in the middle of the gel equidistant from both electrodes

C) in the gel near the negative electrode of the electrophoresis chamber

2 How is agarose powder made to dissolve in the buffer?

A) hot plate

B) sonication

C) microwave

D) stirring

3 When the power supply is turned on, how can you immediately tell that the gel is running?

A) electrical discharge can be observed on the electrodes.

B) Bubbles form on the electrodes.

C) The DNA begins to move through the gel.

D) The gel begins to heat up.

4 Which of the following is NOT a purpose of the loading buffer used in our laboratory?

A) It helps to visualize the DNA bands after electrophoresis is complete.

B) It contains EDTA which uninhibited nucleases.

C) It is thick and viscous allowing the DNA sample to load into the well more easily.

D) It contains a dye that makes the DNA sample easier to see.

1. Pain impulses are carried on both A fibers and C fibers. Afibers carry sharp pain sensations while C fibers carry dull,throbbing pain sensations. If you cut your finger both A and C painfibers are stimulated. Explain which type of pain sensation willreach the brain first and give two reasons why.

2. In humans the outer portion of thecerebral hemispheres is very convoluted. However, the cerebralhemispheres of other animals is much less convoluted. What is theimportance of the convolutions in the human brain?

3. Ms. Neat slips while mopping herkitchen floor. As she falls, she forcefully strikes the edge of thekitchen table with her elbow. Name the nerve she is most likely todamage. What motor and/or sensory symptoms would you expect her todevelop?

4. A S.U. football player was injuredduring a game. He was tackled and slammed into the ground resultingin a dislocated shoulder. The trainer reset the humerus into theglenoid fossa, but the player could not abduct his arm. Explain whythis occurred. Where would you expect there to be a loss ofsensation in the skin?

Weekly leaderboard

Home
Homework Help 3,900,000
Biology 460,000
Start filling in the gaps now
Log in