Which of the following structures store calcium ions that trigger skeletal muscle contraction?

A. Mitochondria
B. Synaptic vesicles
C. Myofibrils
D. Sarcoplasmic reticulum
E. T tubules


Answer: D

Anatomy & Physiology

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The epidermal ridges and dermal ________ increase the area of contact between the epidermis and dermis to help connect these layers.

Fill in the blank(s) with the appropriate word(s).

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Microtubules and microfilaments are the primary components of the ________.

A. plasma membrane B. cytoskeleton C. cytosol D. nucleus

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third step in endocytosis

What will be an ideal response?

Anatomy & Physiology

Which of the following enzyme/substrate combinations is matched INCORRECTLY?

A) cellulose — cellulase B) starch — amylase C) peptides — peptidase D) All are matched correctly.

Anatomy & Physiology