In Birds,the Sinus Venosus Persists as a Patch of Tissue

question 41

Multiple Choice

In birds,the sinus venosus persists as a patch of tissue in the right atrium and functions as

• A)an atrioventricular valve.
• B)the pulmonary trunk.
• C)the bicuspid valve.
• D)the pacemaker.
• E)the entrance to the aorta.

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Definitions:

Behavioral Activation Therapy

A treatment for depression that focuses on engaging patients in activities to improve mood and decrease depressive thoughts.

Psychodynamic Therapy

A therapeutic approach that emphasizes understanding the psychological roots of emotional suffering through introspection and self-examination.

Learned Helplessness

The perception, based on past experiences, that one has no control over one’s reinforcements.

Cognitive-Behavioral Therapy

A type of psychotherapeutic treatment that helps patients understand the thoughts and feelings that influence behaviors to treat various mental disorders.