Question 1 of 32
The humerus fits into what at the shoulder?
Question 2 of 32
What two hormones are involved in regulating the blood calcium level?
A.calcitonin and renin
B.renin and aldosterone
C.renin and PTH
D.aldosterone and PTH
E.PTH and calcitonin
Question 3 of 32
How many vertebrae are there?
Question 4 of 32
Which function of the skeletal system requires the leg bones to be extremely strong?
Question 5 of 32
Which bone is part of the pectoral girdle?
Question 6 of 32
What is the name of the small gap that separates the axon terminal of a nerve from the sarcolemma?
Question 7 of 32
What ion is responsible for initiating muscle contraction?
Question 8 of 32
Question 9 of 32
What is found within the intercalated disks of cardiac muscle?
C.dense connective tissue
Question 10 of 32
What is the name of a sudden and involuntary muscular contraction, often accompanied by pain?
Question 11 of 32
Of the three types of muscle tissue, which is not striated?
D.skeletal and smooth lack striations
E.cardiac and smooth lack striations
Question 12 of 32
The cerebrum is associated with the
Question 13 of 32
What type of memory does language depend upon?
Question 14 of 32
Which of the following is not a function of the nervous system?
A.receive sensory input
B.cushion and protect soft tissue
C.perform information processing
E.generate motor output
Question 15 of 32
The spinal cord belongs to the
Question 16 of 32
Long term use of heroin results in which set of symptoms?
A.weight gain, poor cognitive performance, irritability
B.cardiac and/or respiratory arrest, sudden death
C.apathy, euphoria, hallucinations
D.addiction, hepatitis, HIV/AIDS, various bacterial infections
E.anxiety, jitters, insomnia, headaches
Question 17 of 32
Which of the following is part of the limbic system?
B.primary somatosensory area
Question 18 of 32
Which disorder of the eye is due to the cornea or lens being uneven resulting in a fuzzy image?
Question 19 of 32
The utricle is especially sensitive to what type of movements?
A.back and forth
B.up and down
Question 20 of 32
Which structure in the eye refracts and focuses light rays?
Question 21 of 32
The summing up of nerve signals by _____________________ is called __________________.
A.the reticular activating system, perception
B.the cerebral cortex, sensation
C.sensory receptors, sensation
D.the cerebral cortex, perception
E.sensory receptors, integration
Question 22 of 32
What type of exteroceptors are located in the ear?
E.none of these
Question 23 of 32
Why does wave summation occur?
Question 24 of 32
Question 25 of 32
A motor unit is defined as _______.
A.a single neuron and a single muscle fiber
B.a nerve and a muscle
C.the axon terminals of a single motor neuron and all of the muscle fibers that it stimulates
D.a single muscle fiber and all its axon terminals
Question 26 of 32
When wave summation occurs, _______.
A.individual muscle twitches are separated
B.the muscle force generated decreases
C.the muscle fiber has received a single stimulus event
D.the muscle force generated increases
Question 27 of 32
Which of the following is NOT a phase of a muscle twitch?
Question 28 of 32
Contraction of a skeletal muscle that results from a single stimulus is called a ________.
Question 29 of 32
Which of the following describes the relaxation phase?
Part 6 of 7 - 0.0/ 8.0 Points Answer the following question in your own words without using any resources. Your answer should be written in complete sentences using correct grammar, spelling, and terminology.
Question 30 of 32
Briefly describe "wave summation."
Question 31 of 32
Briefly describe "treppe."