Which Statement Is NOT True Regarding Cardiac Muscle

question 120

Multiple Choice

Which statement is NOT true regarding cardiac muscle?

• A) Cardiac muscle cells must obey the all-or-none law of contraction.
• B) Cardiac muscle cells rely on a sarcoplasmic reticulum for storage of Ca²⁺ ions.
• C) Calcium-induced calcium release is the process by which extracellular Ca²⁺ triggers the release of stored Ca²⁺ from the sarcoplasmic reticulum.
• D) Intercalated disks contain both desmosomes for firm attachment and gap junctions to allow communication.
• E) The oxygen demand of cardiac muscle cells is high because they have many mitochondria.

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Definitions:

Manifest Content

In psychoanalytic theory, particularly in the context of Sigmund Freud's work, this term refers to the actual literal content and storyline of a dream as remembered by the dreamer.

Latent Content

The underlying, unconscious thoughts and feelings that a dream represents, in psychoanalytic theory.

Oedipal Content

Psychological concepts related to the Oedipus complex, Freud's theory of a child's feelings of desire for the opposite-sex parent and jealousy toward the same-sex parent.

Reaction Formation

A psychological strategy wherein a person subconsciously swaps out undesirable emotions or ideas with their direct contrasts.