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Final Exam A&P Dr. K
a&p final
| Question | Answer |
|---|---|
| This part of a neuron functions to produce proteins and is often the site of integration (decision-making) --only it has RER | soma |
| These neurons occur only within the CNS and account for over 90% of the neurons in a human body | interneurons |
| Characteristics of mature neurons | long-lived, cannot divide, hight metabolic rate, can transmit action potentials. (NOT consume little energy) |
| Encountering a venomous snake would stimulate this part of the involuntary (autonomic) nervous system and result in sweating, dilated pupils, and increased heart rate and blood pressure | Sympathetic |
| Which neuroglia lines the cavities of the CNS and helps to produce and circulate cerebrospinal fluid? | ependymal cells |
| When an axon in the peripheral nervous system is damaged in an accident, several growth processes "sprout" from the axon stump. In order to reconnect to its original target the sprout must grow into the | regeneration tube |
| Suppose you are testing a cell membrane that has no K+ channels. There is a lot more K+ inside the membrane than outside. What would the membrane potential most likely be? | -40mV |
| Which of the below are functions of Schwann cells? | shield all axons in the peripheral nervous system from the extracellular fluid |
| Suppose you are testing a membrane with lots of Na+ channels. There is a lot more Na+ outside than inside. if the initial potention is -65mV, what would the final membrane potential most likely be? | O mV |
| This part of a neuron functions to produce proteins and is often the site of integration (decision-making) --only it has RER | soma |
| These neurons occur only within the CNS and account for over 90% of the neurons in a human body | interneurons |
| Characteristics of mature neurons | long-lived, cannot divide, hight metabolic rate, can transmit action potentials. (NOT consume little energy) |
| Encountering a venomous snake would stimulate this part of the involuntary (autonomic) nervous system and result in sweating, dilated pupils, and increased heart rate and blood pressure | Sympathetic |
| Which neuroglia lines the cavities of the CNS and helps to produce and circulate cerebrospinal fluid? | ependymal cells |
| When an axon in the peripheral nervous system is damaged in an accident, several growth processes "sprout" from the axon stump. In order to reconnect to its original target the sprout must grow into the | regeneration tube |
| Suppose you are testing a cell membrane that has no K+ channels. There is a lot more K+ inside the membrane than outside. What would the membrane potential most likely be? | -40mV |
| Which of the below are functions of Schwann cells? | shield all axons in the peripheral nervous system from the extracellular fluid |
| Suppose you are testing a membrane with lots of Na+ channels. There is a lot more Na+ outside than inside. if the initial potention is -65mV, what would the final membrane potential most likely be? | O mV |
| What are the major effects of vitamin D? | it stimulates the intestines to increase absorption of calcium from foods. |
| When blood calcium drops below normal, there is increased secretion of parathyroid hormone. Increased PTH has which of the following effects? | increases the number and thus activity of osteoclasts |
| Place these steps of bone repair in proper sequence !. cartilage is replaced by spongy bone 2. bone remodeling 3.soft callus formation 4.hematoma formationi | 4 3 1 2 |
| Which vitamin stimulates the formation of osteoblasts an is needed to make collagen? | Vitamin C |
| What effect do sex steroid hormones like testosterone and estrogen have on bone? | they stimulate increased bone density |
| Which skeletal muscles moves the cheeks in and out? | buccinator |
| A pregnant, poorly nourished woman may suffer a softening of the bones called | osteomalacia |
| Place the following physical activities in order from the most effective at increasing bone density to the least.. walking playing basketball swimming | basketball walking swimming |
| Which skeletal muscle is a powerful elbow flexor? | brachialis |
| Which skeletal muscles cause flexion at the knee joint? | semitendinosus and biceps femoris |
| Which skeletal muscles cause grinding of the teeth and chewing of food? | temporalis and masseter |
| The ____ is an elaborate system of membranous tubes that wraps around each myofibril and functions to store calcium? | sarcoplasmic reticulum |
| ____ muscle is striated and involuntary. Unlike the other types of muscle its cells form branches | Cardiac |
| All of the following are functions of muscles | generate heat, stabilize joints, maintain posture, produce movement by shortening |
Created by:
alexaperry1
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