Twitch Summation

question 79

Multiple Choice

Twitch summation

• A) is a means by which gradation of muscle contraction may be accomplished
• B) results from the additional release of Ca²⁺ within the cytosol of muscle fibers
• C) results from increasing the frequency at which motor units are firing within a muscle
• D) is a means by which gradation of muscle contraction may be accomplished and results from increasing the frequency at which motor units are firing within a muscle
• E) all of these

---

Definitions:

Compounded Annually

This refers to the process where interest is added to the principal sum, so that from that moment on, the interest that has been added also earns interest, being calculated and added to the account annually.

Simple Interest

Interest calculated on the principal amount of a loan or deposit, without compounding over time.

Savings Account

A deposit account held at a bank that provides interest on the funds deposited.

Lump Sum

An individual disbursement occurring at a certain point, in contrast to periodic payments carried out sequentially.