Concept explainers
Introduction:
The muscular system deals with an organs made of skeletal muscles, cardiac and smooth muscles. It allows movement of the body, circulates blood and maintains posture throughout the body.

Answer to Problem 1TYR
Correct answer:
To make a muscle contract more strongly, the nervous system can activate more motor units. This process is called as recruitment. Therefore, option a is correct.
Explanation of Solution
Justify the reasons for the correct statement:
Recruitment helps in the activating additional motor units in order to complete an increase in contractile strength of a muscle.
Option (a) is given as, “recruitment”
Hence, Option (a)is correct.
Justify reasons for the incorrect statement:
Option (b) is given as, “Summation”
Increases the force of contraction by increasing the frequency of the stimulus of the muscle fibers .Hence, it is incorrect answer.
Option (c) is given as,“Incomplete tetanus”
Itoccurs if the stimulus frequency increases. Muscle tension rises to the high level and relaxation periods are very short and results in a fluttering contraction.Hence it is incorrect answer.
Option (d) is given as,“Twitch”
It is defined as a series of contraction and relaxation is termed as twitching.Hence, it is incorrect answer.
Option (e) is given as,“Concentric contraction”
In concentric contraction, shortening of the muscle occurs with muscle tension hence it is incorrect answer.
Hence, options (b), (c), (d), and (e) are incorrect.
To conclude, recruitment helps in activation of motor units.
Want to see more full solutions like this?
Chapter 11 Solutions
ANATOMY PHYS VOL II W ACCESS CUSTOM
- What symbolic and cultural behaviors are evident in the archaeological record and associated with Neandertals and anatomically modern humans in Europe beginning around 35,000 yBP (during the Upper Paleolithic)?arrow_forwardDescribe three cranial and postcranial features of Neanderthals skeletons that are likely adaptation to the cold climates of Upper Pleistocene Europe and explain how they are adaptations to a cold climate.arrow_forwardBiology Questionarrow_forward
- ✓ Details Draw a protein that is embedded in a membrane (a transmembrane protein), label the lipid bilayer and the protein. Identify the areas of the lipid bilayer that are hydrophobic and hydrophilic. Draw a membrane with two transporters: a proton pump transporter that uses ATP to generate a proton gradient, and a second transporter that moves glucose by secondary active transport (cartoon-like is ok). It will be important to show protons moving in the correct direction, and that the transporter that is powered by secondary active transport is logically related to the proton pump.arrow_forwarddrawing chemical structure of ATP. please draw in and label whats asked. Thank you.arrow_forwardOutline the negative feedback loop that allows us to maintain a healthy water concentration in our blood. You may use diagram if you wisharrow_forward
- Give examples of fat soluble and non-fat soluble hormonesarrow_forwardJust click view full document and register so you can see the whole document. how do i access this. following from the previous question; https://www.bartleby.com/questions-and-answers/hi-hi-with-this-unit-assessment-psy4406-tp4-report-assessment-material-case-stydu-ms-alecia-moore.-o/5e09906a-5101-4297-a8f7-49449b0bb5a7. on Google this image comes up and i have signed/ payed for the service and unable to access the full document. are you able to copy and past to this response. please see the screenshot from google page. unfortunality its not allowing me attch the image can you please show me the mathmetic calculation/ workout for the reult sectionarrow_forwardIn tabular form, differentiate between reversible and irreversible cell injury.arrow_forward
- Comprehensive Medical Assisting: Administrative a...NursingISBN:9781305964792Author:Wilburta Q. Lindh, Carol D. Tamparo, Barbara M. Dahl, Julie Morris, Cindy CorreaPublisher:Cengage LearningHuman Physiology: From Cells to Systems (MindTap ...BiologyISBN:9781285866932Author:Lauralee SherwoodPublisher:Cengage Learning
- Concepts of BiologyBiologyISBN:9781938168116Author:Samantha Fowler, Rebecca Roush, James WisePublisher:OpenStax College



