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Anatomy
Week 6-12
| Question | Answer |
|---|---|
| What is another name for a sphincter muscle? | circular muscle |
| The muscle that extends and adducts the arm is the: | latissimus dorsi. |
| The muscle that allows the thumb to be drawn across the palm to touch the tip of any finger is the: | opponens pollicis. |
| 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. |
| Fascicles are held together by a connective tissue layer called the: | perineurium |
| Gray matter in the brain and spinal cord consists primarily of: | cell bodies. |
| Regeneration of nerve fibers will take place only if the cell body is intact and the fibers have: | a neurilemma. |
| Cerebrospinal fluid circulates through the ventricles, into the central canal, and _____, and is absorbed back into the blood. | subarachnoid space |
| Several “vital centers” are located in the: | medulla |
| The peripheral nervous system includes: | only cranial nerves, spinal nerves, and their branches. |
| The innermost layer of the meninges is the: | pia mater. |
| The main divisions of the central nervous system are the: | brain and spinal cord. |
| Which plexus contains nerves that innervate the lower part of the shoulder and the entire arm? | Brachial |
| The anatomical stalk of the pituitary is also known as | infundibulum |
| Region of the adrenal cortex that secretes DHEA. | zona reticularis |
| Receptors for hearing are located in the | cochlear duct. |
| Hormone that inhibits osteoclast activity in children. | calcitonin |
| Pancreatic cell type that produces insulin. | beta cells |
| Transparent mucous membrane covering the inner surface of the eyelid. | conjunctiva |
| The nerve carrying taste information from the anterior two-thirds of the tongue is the | facial |
| The normal cardiac impulse that initiates mechanical contraction of the heart arises in the | SA node. |
| Which mature cell has no nucleus, mitochondria, or ribosomes? | Erythrocyte |
| The molecule that makes up 95% of the dry weight of each red blood cell and is responsible for the red pigment is | hemoglobin |
| The brachiocephalic vein drains blood from the | head, neck, and upper extremity. |
| Renal veins drain blood from the | kidneys |
| A glycoprotein hormone that is secreted to increase oxygen concentration in the tissues is | erythropoietin. |
| The free edges of the atrioventricular valves are anchored to the | papillary muscles. |
| Which layer of the larger blood vessels is made up of endothelium? | tunica intima |
| The heart valves that are located where the trunk of the pulmonary artery joins the right ventricle and where the aorta joins the left ventricle are called | semilunar valves. |
| Microscopic vessels that carry blood from small arteries to small veins are | capillaries |
| About half of the lymph flowing through the thoracic duct comes from the: | liver and small intestine. |
| Interferon inhibits the spread of: | virus and cancer |
| The breast—the mammary gland and surrounding tissue—is drained by the: | lymphatics that originate in and drain the skin over the breast with the exception of the areola and nipple. and lymphatics that originate in and drain the substance of the breast itself, as well as the skin of the areola and nipple. |
| The cisterna chyli: | originates in the thoracic duct. |
| The lymph nodes located just above the bend of the elbow are called the _____ lymph nodes. | supratrochlear |
| During their residence in the thymus, pre-T cells develop into _____, cells that proliferate as rapidly as any in the body. | thymocytes |
| Hassall corpuscles are part of the: | thoracic duct. |
| An infection in the thumb may result in enlargement of the _____ nodes. | superficial cubital |
| Antibodies are proteins of the family called | immunoglobulins |
| Lymph capillaries called lacteals are located in the: | small intestine. |
| Adaptive immunity, part of the body’s third line of defense, is orchestrated by two different classes of a type of white blood cell called the | lymphocyte. |
| The respiratory system can be divided into what two parts? | Upper respiratory tract and lower respiratory tract |
| The eustachian tube connects the middle ear with the: | nasopharynx |
| Paranasal sinuses are normally filled with: | air |
| In the right lung, the superior and middle lobes are separated by the: | horizontal fissure. |
| The hollow nasal cavity is separated by a midline partition called the: | septum |
| The approximate length of the trachea, or windpipe, is _____ cm. | 11 |
| The small, leaf-shaped cartilage behind the tongue and hyoid bone is the: | epiglottis |
| The smallest branches of the bronchial tree are: | bronchioles. |
| Olfactory epithelium is found: | covering the superior turbinate. |
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llacy23
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