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SCI 220 Part II
| Question | Answer |
|---|---|
| What individual muscle fibers are covered by a connective tissue membrane? | endomysium |
| What is the continuous low level of sustained contraction maintained by all skeletal muscles ? | muscle tone |
| What is the term used to describe a muscle that directly performs a specific movement> | agonist |
| Muscles that move the forearm include which of the following? | brachioradialis pronator teres biceps brachi |
| This arrangement of muscle fascicles tends to be triangular in shape. The Pectoralis major is an example of a muscle with this type of muscle fascicle arrangement. | convergent |
| In addition to the Pectoralis major, another muscle that displays this pattern of fascicle arrangement is Latissimus dorsi. | convergent |
| The long axes of the fascicles run parallel to the long axis of the muscle is a description of this type of fascicle arrangement. | parallel |
| Muscles with this type of muscle fascicle arrangement are either fusiform or straplike in appearance. | parallel |
| What point of attachment that does not move when the muscle contracts? | origin |
| The innermost muscle of the abdominal wall is the... | internal oblique. |
| Muscles that move the wrist, hand, and fingers can be | extrinsic or intrinsic. |
| The muscle that helps hold the scapula against the thorax and is useful in pushing or punching movements is the | deltoid |
| A muscle with fascicles that insert into the tendon from both sides is categorized as | bipennate. |
| An example of a muscle with this type of fascicle arrangement is the orbicularis oris. parallel | circular |
| The Sartorius muscle, a thin straplike muscle would have muscle fascicles arranged in | parallel |
| A muscle with fascicles that insert into only one side of the tendon is categorized as | unipennate. |
| The common tendon of the gastrocnemius and soleus is called the | calcaneal tendon. |
| The fibrous connective tissue that surrounds the entire muscle and is outside the epimysium and tendon is called the | fascia. |
| Which of the following statements about the muscles of the thorax is correct? | The muscles of the thorax assist in respiration. The internal and external intercostal muscles have opposite effects on the ribs. |
| The flexor muscles that move the fingers are mostly located on the: | anterior medial surface of the forearm. |
| Which of the following is not a group of pennate muscles? | Tripennate |
| Which of the following body systems assists the muscles in maintaining posture? | Digestive Endocrine Excretory |
| Which of the following are muscles that moves the foot? | Peroneus longus Tibialis anterior Soleus |
| The latissimus dorsi muscle is an example of a _____ muscle | spiral |
| Which of the following statements about the muscles of the head is correct? | They are paired muscles. They have different actions depending on whether one or both parts of the pair contract. |
| The posterior arm muscle that extends the forearm is the: | triceps brachii. |
| A signal conduction route to and from the central nervous system is a(n) | reflex arc. |
| What structure of the Schwann cell is essential to normal nerve growth and the regeneration of injured nerve fibers? | neurilemma |
| In the human nervous system: | there are almost equal numbers of glia cells and neurons. |
| he autonomic nervous system does stimulate: | smooth muscles. glands. cardiac muscle. |
| Neurons in the CNS have less chance of regenerating for all of the following reasons except: | microglia lay down scar tissue. |
| The enteric nervous system is made up of a complex network of nerve plexuses that control the visceral effectors in the | intestinal wall. |
| How many pairs of spinal nerves are connected to the spinal cord? | 31 |
| The dorsal root of each spinal nerve is easily recognized as a swelling called the | dorsal root ganglion. |
| Spinal cord tracts provide conduction paths to and from the brain. The tracts that conduct sensory impulses down the cord from the brain are called _____ tracts. | descending |
| If you trace the axon inside the sympathetic chain ganglion, the preganglionic fiber branches along which pathway? | synapses with a sympathetic postganglionic neuron sends ascending or descending branches through the sympathetic trunk to synapse with postganglionic neurons in other chain ganglia passes through one or more ganglia without synapsing |
| Some parasympathetic postganglionic neurons have their cell bodies in nuclei in the brainstem. | False |
| The spinal tract is located on the side of the cord, originates in the brain, and terminates in the spinal cord in the _____ tract. | lateral corticospinal |
| The brain has _____ major divisions. | six |
| Which of the following is not true of the lateral corticospinal tract fibers? | Most inhibit the lower motor neuron. |
| Small branches from the cervical plexus join which two cranial nerves? | Hypoglossal and accessory |
| The hormone produced by the heart | increases the excretion of sodium in the urine. |
| Which of the following statements correctly describe the spiral organ of Corti? | The "hairs" of the receptor cells are embedded in the tectorial membrane. High-frequency sounds stimulate hair cells at the basal end of the basilar membrane. The spiral organ is part of the cochlear duct, which equals the scala media. |
| Gustatory cells are located in all of the following areas | on the posterior wall of the pharynx. on the fungiform papillae of the anterior tongue. on the inner surface of the cheeks. |
| Cardiac output is determined by | stroke volume and heart rate. |
| The normal cardiac impulse that initiates mechanical contraction of the heart arises in the | SA node. |
| About half of the lymph flowing through the thoracic duct comes from the: | liver. small intestine. |
| A type of blood cell produced by lymph nodes is called a(n) | monocyte. |
| The cisterna chyli: | originates in the thoracic duct. |
| The microscopic cilia function to | move mucus toward the pharynx. |
| The vibrissae function as | filters. baffles. producers of mucus. |
| An inflammation of the lower respiratory tract that involves the airways of the lungs is called | pneumonia. |
| Which of the following is lined with a ciliated mucous membrane? | Posterior nares Trachea Primary bronchi |
| The eustachian tube connects the middle ear with the: | nasopharynx. |
| Anatomically, how does the right bronchus differ from the left bronchus, and what effect might this have on the aspiration of objects? | The right bronchus is slightly larger and more vertical than the left. This anatomical fact helps explain why aspirated foreign objects frequently lodge in the right bronchus. |
| The extrinsic tongue muscles differ from the intrinsic tongue muscles in that the _____ outside the tongue. | extrinsic muscles insert into the tongue but have their origin |
| All of the following are classified as accessory organs of the digestive system: | tongue. liver. pancreas. |
| Microvilli can be found in the: | small intestine. large intestine. |
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