Which muscle inserts on the superior border of the inferior rib?
A) external obliques
B) internal intercostals
C) transversus thoracis
D) external intercostals
D
Explanation:
A) The external obliques insert on the linea alba and iliac crest.
B) The internal intercostals insert on the inferior border of the preceding rib.
C) The transversus thoracis inserts on the cartilages of the ribs.
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Where do the citric acid cycle reactions occur?
a. cytoplasm b. cytosol c. inner-mitochondrial membrane d. outer-mitochondrial membrane e. mitochondrial matrix
During vagal stimulation of the frog heart, you observe which of the following?
A) The heart slows until it almost stops, then speeds up. B) The heart stops beating, and the frog dies. C) The heart slows, stops, and then begins to beat again. D) The heart slows down.
What is a reflex?
A) A reflex is a slow, calculated action triggered by a single exposure to specific stimuli. B) A reflex is a slow, calculated action triggered by repeated exposure to specific stimuli. C) A reflex is a slow, calculated action involving input from the brain triggered by specific stimuli. D) A reflex is when sensory inputs are sent quickly to the brain for analysis before any response occurs. E) A reflex is a rapid, automatic response triggered by specific stimuli.
During depolarization
A. calcium ions move inside the neuron. B. many potassium ions move outside the neuron. C. sodium ions move inside the neuron. D. electrons stream along the axon.