What is the functional unit of a skeletal muscle called?
Answer Choices:
Answer: a) sarcomere (User’s incorrect answer: b) myofibril)
Which of the following is the correct sequence of events for muscle contractions?
Answer Choices:
Answer: b) neurotransmitter release, motor neuron action potential, muscle cell action potential, release of calcium ions from SR, ATP-driven power stroke
Which of the following is an excitatory neurotransmitter secreted by motor neurons innervating skeletal muscle?
Answer Choices:
Answer: d) acetylcholine
The part of a neuron that conducts impulses away from its cell body is called a(n) _______.
Answer Choices:
Answer: b) axon
An impulse from one nerve cell is communicated to another nerve cell via the _______.
Answer Choices:
Answer: d) synapse
The term central nervous system refers to the _______.
Answer Choices:
Answer: d) brain and spinal cord
What are ciliated CNS neuroglia that play an active role in moving the cerebrospinal fluid called?
Answer Choices:
Answer: a) ependymal cells
A shallow groove on the surface of the cortex is called a _______.
Answer Choices:
Answer: c) sulcus
Ridges of tissue on the surface of the cerebral hemispheres are called _______.
Answer Choices:
Answer: c) gyri
Starting at the spinal cord, the subdivisions of the brachial plexus are (in order):
Answer Choices:
Answer: c) roots, trunks, divisions, and cords (User’s incorrect answer: b) trunks, divisions, cords, and roots)
Pressure, pain, and temperature receptors in the skin are _______.
Answer Choices:
Answer: b) exteroceptors
Nerves that carry impulses toward the CNS only are _______.
Answer Choices:
Answer: a) afferent nerves
The patellar ‘knee jerk’ reflex is an example of a(n) _______.
Answer Choices:
Answer: d) stretch reflex
Which of the following is the correct simple spinal reflex arc?
Answer Choices:
Answer: b) receptor, afferent neuron, integration center, efferent neuron, effector
Preparing the body for the ‘fight-or-flight’ response is the role of the _______.
Answer Choices:
Answer: d) sympathetic nervous system
Control of temperature, endocrine activity, and thirst are functions associated with the _______.
Answer Choices:
Answer: d) hypothalamus
What structure regulates the amount of light passing to the visual receptors of the eye?
Answer Choices:
Answer: a) iris
Receptors for hearing are located in the _______.
Answer Choices:
Answer: a) cochlea