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SCI220 - Set 2
| Question | Answer |
|---|---|
| The innermost muscle of the abdominal wall is the | transverse abdominis. |
| A muscle with fascicles that insert into only one side of the tendon is categorized as | unipennate |
| T or F: The fibrous connective tissue that surrounds the entire muscle and is outside the epimysium and tendon is called the fascia. | True |
| The ____ flexes the semipronated or semisupinated forearm is the: | brachioradialis |
| The _____ that extends and adducts the arm is the: | latissimus dorsi. |
| The prime mover also be called the | agonist |
| What is a reflex arc? | A signal conduction route to and from the central nervous system |
| What structure of the Schwann cell is essential to normal nerve growth and the regeneration of injured nerve fibers? | neurilemma |
| The _____ nervous system is a complex network of nerve pathways embedded in the intestinal wall with a network of integrators and feedback loops that can act somewhat independently. | enteric |
| Astrocytes attach to: | neurons and oligodendrocytes |
| The nervous system is organized to | detect and evaluate changes in the internal and external environment |
| Which of the following compounds cannot cross the blood-brain barrier? | Dopamine |
| Along a neuron, the correct pathway for impulse conduction is: | dendrite, cell body, and axon |
| How many pairs of spinal nerves are connected to the spinal cord? | 31 |
| What are ventricles? | large fluid-filled spaces within the brain |
| Formation of the cerebrospinal fluid occurs in the | choroid plexus |
| Cerebrospinal fluid is found in | subarachnoid space, central canal, and third ventricle |
| The lumbar plexus gives rise to the _____ nerve. | femoral |
| Which part of the brain releases the hormone melatonin? | Pineal gland |
| The tenth cranial: | vagus nerve |
| Small branches from the cervical plexus join which two cranial nerves? | Hypoglossal and accessory |
| Cerebrospinal fluid circulates through the ventricles, into the central canal, and _____, and is absorbed back into the blood. | subarachnoid space |
| Region of the hypophysis that contains secretory endocrine cells derived from the oral ectoderm. | adenohypophysis |
| What endocrine gland of the thorax is important for immune function | thymus gland |
| T or F: The tectorial membrane bends with vibrations, whereas the basilar membrane is rigid and fixed. | False |
| Which endocrine glands develop primarily from the endoderm of the pharynx? | thyroid and parathyroids |
| The mineral ___ is essential for the formation of thyroid hormone? | iodine |
| What hormones does the zona reticularis secrete? | DHEA |
| Cardiac output is determined by | stroke volume and heart rate. |
| What does the Starling's Law of the heart state? | the longer, or more stretched, the heart fibers are at the beginning of the contraction, the stronger the contraction. |
| The localized pressure gradient needed to maintain blood flow in a tissue is called | perfusion pressure. |
| Blood viscosity stems mainly from the red blood cells but also partly from the _____ in blood. | protein molecules present |
| The free edges of the atrioventricular valves are anchored to the | papillary muscles. |
| Mechanical devices that permit the flow of blood in one direction only are called | valves |
| _____ is used to determine the volume percentage of red blood cells in whole blood. | Hematocrit |
| What are capillaries? | Microscopic vessels that carry blood from small arteries to small veins |
| The heart has its own special covering, a loose-fitting inextensible sac called the | pericardium |
| T or F: Lacteals drain into the right lymphatic duct | False |
| An infection in the thumb may result in enlargement of the _____ nodes. | superficial cubital |
| Lower respiratory tract is made up of | The trachea, bronchial tree, and lungs |
| The surface of the respiratory membrane inside each alveolus is coated with a fluid containing | surfactant |
| The microscopic cilia move mucus | toward the pharynx |
| The lower border of the cavity of the larynx is formed by the: | cricoid cartilage |
| What is the correct sequence of air as it passes through the nose into the pharynx | Anterior nares vestibule inferior, middle, and superior meatus posterior nares |
Created by:
laureana