You are singing a song at karaoke and reach a part that requires a high pitch. To hit the high notes, you
A. change the shape of the laryngeal cartilages.
B. increase the tension on your vocal cords.
C. change the size of the laryngeal cartilages.
D. change the force of the air passing over the vocal cords.
Answer: B
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The primary motor cortex is connected with motor neurons in the brain stem and spinal cord, and ascending sensory information is carried to the thalamus by (the)
A) cerebral peduncles. B) inferior colliculi. C) red nucleus. D) tectum. E) None of the answers are correct.
Vasodilation in skeletal and cardiac muscle tissue results from the signal molecule _____ binding to ______ receptors
A. Epinephrine; beta 2 B. Epinephrine; alpha C. Acetylcholine; beta 2 D. Acetylcholine; alpha
A collection of specialized cells and extra-cellular substances around them is known as a/an ________.
A. organelle B. organism C. organ D. tissue
Memories are formed by neural pathways of modified synapses
Indicate whether the statement is true or false