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Week 678 9 1 Anatomy

Anna Mattern

QuestionAnswer
Another name for a skeletal muscle cell is a(n): muscle fiber.
Which of the following is not a muscle that moves the foot? Sartorius
Which of the following statements about the muscles of the thorax is incorrect? When the diaphragm contracts, it decreases the volume of the thoracic cavity and expels air from the lungs.
Most muscles span a joint. True
The latissimus dorsi muscle is an example of a _____ muscle. spiral
The posterior arm muscle that extends the forearm is the: triceps brachii.
Poor posture puts abnormal strain on bones and may eventually produce deformities. True
The muscle that extends and adducts the arm is the: latissimus dorsi.
The origin of a muscle is on the femur, and the insertion is on the tibia. When it contracts, it bends the knee. Which of the following is true? The knee is acting as a fulcrum.
Groups of skeletal muscle fibers are bound together by a connective tissue envelope called the: perimysium
The prime mover can also be called the: agonist
Which of the following statements is incorrect? The origin of the muscle is attached to the bone that does not move. The insertion of the muscle is attached to the bone that moves. When the muscle contracts, the insertion moves toward the origin. all of the above
Skeletal muscles constitute approximately ____ of our body weight. 50%
The muscle that allows the thumb to be drawn across the palm to touch the tip of any finger is the: opponens pollicis.
Which of the following muscles has fibers on a transverse plane? Transverse abdominis
Which of the following muscles does not move the upper arm? Trapezius
There are more than 600 muscles in the body. True
The muscle that flexes the semipronated or semisupinated forearm is the: brachioradialis
The most common type of lever in the body is a _____-class lever. third
Muscles that move the upper arm originate on the: clavicle and scapula.
The flexor muscles that move the fingers are mostly located on the: anterior medial surface of the forearm.
Muscles located on the lower leg move the: foot
The linea alba is a band of connective tissue that runs over the rectus abdominis from the xiphoid process to the pubis. True
Which of the following is not a group of pennate muscles? Tripennate
A muscle is attached to the femur and tibia. Its function or action is to bend the knee. When it contracts, it is acting as the: prime mover.
The origin of a muscle is on the femur, and the insertion is on the tibia. When it contracts, it bends the knee. Its fibers run parallel to the body. Which of the following terms might be part of its name? Flexor
The Achilles tendon is common to both the gastrocnemius and the soleus. True
Which of the following is not a muscle of the quadriceps femoris group? Biceps femoris
Fascia is a general term for the fibrous connective tissue found under the skin and around muscle. True
The sternocleidomastoid muscle is an example of a muscle named for its: points of attachment.
The autonomic nervous system does not stimulate: skeletal muscles.
Which is not true of the myelin sheath? It covers cell bodies in the brain and spinal cord.
Which of the following compounds cannot cross the blood-brain barrier? Dopamine
Multipolar neurons have: multiple dendrites and one axon.
Neurons in the CNS have less chance of regenerating for all of the following reasons except: microglia lay down scar tissue.
Small distinct regions of gray matter in the CNS are called: nuclei
Which of the following is the deepest connective tissue layer of a nerve? Endoneurium
Which of the following is not a function of the central nervous system (CNS)? Integrating sensory information Evaluating the information Initiating an outgoing response
Regeneration of nerve fibers will take place only if the cell body is intact and the fibers have: a neurilemma.
The efferent pathways of the autonomic nervous system consist of the ________ nervous systems. sympathetic and parasympathetic
Gray matter in the brain and spinal cord consists primarily of: cell bodies.
Interneurons reside in the: CNS only.
The largest and most numerous types of neuroglia are the: astrocytes
Astrocytes attach to: neurons blood vessels.
The afferent pathways of the autonomic nervous system: carry feedback information to integrating centers in the brain.
A neuron that transmits a nerve impulse toward the central nervous system is called a(n): sensory neuron.
Which is true of a reflex arc? It always consists of an afferent neuron and an efferent neuron.
Along a neuron, the correct pathway for impulse conduction is: dendrite, cell body, and axon.
One of the components of the blood-brain barrier is: astrocytes
Most unipolar neurons are usually: sensory neurons.
Fascicles are held together by a connective tissue layer called the: perineurium
Nerves that contain mostly afferent fibers are called _____ nerves. sensory
The white matter of the nervous system is made up of: myelinated fibers.
The nervous system can be divided: according to its structure. according to direction of information flow. by control of effectors. Correct!
The nervous system is organized to do which of the following? Detect changes in the external environment. Detect changes in the internal environment. Evaluate changes in the environment.
Dendrites conduct impulses _____ cell bodies. toward
The lymphatic system, like the circulatory system, is a closed circuit. True
The part of the nervous system that transmits impulses from the CNS to the skeletal muscle is the: somatic nervous system.
In the human nervous system: there are almost equal numbers of glia cells and neurons.
A neuron that has only one axon but several dendrites is classified as a _____ neuron. multipolar
The areas specializing in language functions are found in the left cerebral hemisphere in: about 90% of the population.
The cranial nerve that arises from the spinal cord is the: accessory.
Cerebrospinal fluid circulates through the ventricles, into the central canal, and _____, and is absorbed back into the blood. subarachnoid space
The innermost layer of the meninges is the: pia mater.
The brain has _____ major divisions.
Created by: Annam7160
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