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Week 7/13
A&P
| Question | Answer |
|---|---|
| In a myelinated neuron, the impulse can travel under the myelin between nodes of Ranvier. | True |
| Which membrane receptor acts to directly change ion permeability when stimulated? | Gated-channel receptor |
| A slight shift away from the resting membrane potentials in a specific region of the plasma membrane is called a _____ potential. | local |
| The cortex is capable of storing and retrieving information from both short-term and long-term | memory. |
| The _____ is an extension of the great toe, with or without fanning of the other toes, in response to stimulation of the outer margin of the sole of the foot. | Babinski sign |
| Which of the following is a description of the principle of autonomic antagonism as it relates to the autonomic nervous system? | If sympathetic impulses tend to stimulate an effector, parasympathetic impulses tend to inhibit it |
| Nerves that innervate the floor of the pelvic cavity and some of the surrounding areas are found in the _____ plexus | coccygeal |
| Parasympathetic stimulation has no effect on any of the following areas except: | sweat glands. |
| Danielle has sustained an injury that has reduced her ability to complete simple tasks such as lifting a pencil, manipulating eating utensils, and brushing her hair. The injury has affected the _____ motor pathways _____ the central nervous system (CNS). | voluntary; outside |
| where do frequencies—from high to low pitches—cause activity in the hair cells within the cochlear duct? | the apex of the cochlea, between the base and the apex of the cochlea |
| If movement of a visual stimulus is leftward in one eye and rightward in the opposite eye, the brain interprets this as movement toward (or away) from the face along the midline. Which eye is visualizing leftward stimulus? | right eye |
| Erythrocytes begin their maturation sequence in red bone marrow from nucleated cells known as: | hematopoietic stem cells. |
| From which vessels do myocardial cells receive blood? | coronary arteries |
| The _____ is(are) supplied with blood from the left subclavian artery. | head and upper extremities |
| The vagus is said to act as a “brake” on the heart. This situation is called | vagal inhibition. |
| The vagus is said to act as a “brake” on the heart. This situation is called | vagal inhibition. |
| Erythrocytes begin their maturation sequence in red bone marrow from nucleated cells known as: | hematopoietic stem cells. |
| The chemoreceptors in the carotid bodies are particularly sensitive to: | hypercapnia. |
| Fluid that is clear, watery and contains protein molecules, salts, and other substances is called | intercellular fluid |
| Activities that result in central movement or flow of lymph are called | lymphokinetic activities. |
| External respiration can be defined as: | the exchange of gases between the lung and the blood capillaries in the lung. & pulmonary ventilation. |
| Peristalsis is regulated in part by the intrinsic stretch reflexes. It is also thought to be stimulated by the hormone | cholecystokinin (CCK) |
| The hormone thought to be a messenger causing release of digestive enzymes from the intestinal mucosa is: | vasoactive intestinal peptide. |
| The hormone that inhibits gastric muscle, slowing passage of food into the duodenum, is called: | gastric inhibitory peptide. |