Chapter 9
Name a muscle that performs elbow flexion
Biceps brachii, brachialis, brachioradialis
What is the functional unit of skeletal muscle called?
Sarcomere
Ependymal cells secrete _________
cerebrospinal fluid
Which lobe of the brain is responsible for hearing?
Temporal
Smell
Which type of lever would be present when standing on your tiptoes?
2nd Class
Which myofilament is considered "thick"?
Myosin
Oligodendrocytes and schwann cells are similar in what they produce. What substance do they produce?
Myelin
The arbor vitae is found in the __________
Cerebellum
Which area of the brain is responsible for the production of speech / language?
Broca's
What is the main action of the hamstring muscles at the knee?
Knee flexion
Define atrophy
A decrease in size of muscle fibers
Name a factor that would increase an axon's conduction speed
Increased axon diameter
Increased myelination
Name the 3 regions of the brainstem
Midbrain, pons, medulla oblongata
Name the 4 muscles that make up the quads
rectus femoris
vastus lateralis, medials, and intermedius
What is the deepest abdominal muscle?
Transversus abdominis
Which of the myofilaments blocks the binding sites on actin to prevent cross bridge formation?
Tropomyosin
What is a collection of cell bodies in the peripheral NS called?
Ganglion
What is the function of the hippocampus?
To store memories and help with learning
An increase in muscle fiber size is known as ___________
hypertrophy
Name 3 of the rotator cuff muscles
teres minor
infraspinatus
suprasinatus
subscapularis
What neurotransmitter crosses the neuromuscular junction to stimulate sodium channels on a muscle fiber?
Acetylcholine
Hyperpolarization occurs when a cell becomes more _________ than resting potential
Negative
Damage to the basal ganglia would cause what movement disorder?
Parkinson's
Muscle fascicles are surrounded by what connective tissue layer?
Perimysium