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Unit 3 pt 2
Unit pt 2
| Question | Answer |
|---|---|
| Smooth muscles | Organ, contract for long periods of time and do not fatigue easily, non striated, involuntary |
| Skeletal muscles | voluntary, contract quickly and fatigue easily, triceps, biceps, striated |
| Cardiac muscles | branched, involuntary, contract quickly and do not fatigue easily, heart, striated |
| Part of the nervous system that carries sensory information and signals to brain and spinal cord: | Sensory division |
| To increase the strength of contraction of a whole muscle, one can recruit: | Motor units |
| Increased myelination of axons tends to increase: | Speed of impulse conduction |
| Major contributors to resting membrane potential includes ____________________ and non-gated ion channels. | Na+/K+-ATPase pumps |
| Neurons with resting cell membranes tend to have: | More sodium ions outside than inside |
| Time when threshold stimulus does not start another action potential | Absolute refractory period |
| Time when stronger threshold stimulus starts another action potential | Relative refractory period |
| True about an EPSP: | Action potential of postsynaptic neuron becomes more likely |
| True about an IPSP: | Action potential of postsynaptic neuron becomes less likely |
| The central nervous system (CNS) consists of | the brain and spinal cord. |
| The meninges consist of | the pia mater, arachnoid mater, and dura mater. |
| Cerebrospinal fluid is | clear liquid that nourishes and bathes the brain and spinal cord |
| The innermost meninges that contains blood vessels and nerves is ____. | pia mater |
| Cerebrospinal fluid | informs the autonomic centers in the brainstem and hypothalamus about the internal environment. protects the brain and spinal cord. provides a pathway for waste to enter the blood. |
| Reflexes help to control | digestive activities. heart rate and blood pressure. respiratory rate. |
| Major function of muscle: | Generate body heat Move body parts |
| Connective tissue layer that immediately surrounds muscle fibers (cells) inside a fascicle | Endomysium |
| The neurotransmitter that stimulates skeletal muscle contraction: | Acetylcholine |
| Ca2+ binds to __________ which moves __________ out of the way so that muscle can contract. | Troponin; tropomyosin |
| The site on the folded sarcolemma where ACh binds is | Motor-end-plate |
| The thin sheath of fibrous tissue surrounding each muscle holding it in place. | Fascia |
| Major cause of muscle fatigue: | Lactic acid |
| The biceps brachii flexes the elbow. The triceps brachii extends the elbow. These muscle are _____ to each other. | Antagonists |
| The biceps femoris flexes the knee. The semitendinosus also flexes the knee. These muscle are _____ to each other. | Synergists |
| Definition of a motor unit: | One motor neuron and all the muscle fibers it controls |
| Neurons connect in a circuit and are stimulated over and over again. These actions create | short term (working) memory |
| The outermost meninges that composed of tough dense connective tissue is the __. | dura mater |
| Meninges located in the middle resembles cob webs. | arachnoid mater |
| The outermost layer of the cerebrum composed of gray unmeylinated mater is called the ___. | Cerebral cortex |
| The area in the frontal lobe responsible for speech production. | broca's |
| The area in the temporal lobe that allows you to understand written and spoken language. | wernicke's |
| The lobe of the brain that allows for; Concentration, planning, problem solving, judging consequences of behavior, and voluntary skeletal muscles | frontal |
| The lobe of the brain that; Interpret temperature, touch, pressure, and pain of the skin. It also allows you to understand speech and use words to express your thoughts and feelings. | parietal |
| The lobe of the brain that; controls hearing, interpreting sensory experiences and remember visual scenes, music, and other complex sensory patterns | temporal |
| The lobe of the brain that; controls vision, combine visual images with other sensory experiences | occipital |
| The lobe of the brain that; processes taste information, Translates sensory info to proper emotional responses. | insula |
| The Dominant lobe of the brain controls all of the following | verbal . analytics lanuage |
| The Non dominant hemisphere of the brain controls all of the following | motor task non verbal task understanding and interpreting music and patterns |
| Part of the nervous system that carries signals to smooth muscles and glands: | Autonomic motor division |
| When ________ memory is obtain the shape and function of the neurons change. | long term memory |
| The ________ of the limbic system determines what type of the information you are exposed to and files in that corresponding lobe of the brain. | hippocampus |
| Stage of sleep when dreaming occurs. | REM |
| Stage of sleep that restful and dreamless. | Non REM |
| Pathway for ascending and descending information from the body to and from the brain. | spinal cord |
| The ability of a muscle to reduce the distance between the parts of its contents is ___. | contractibility |
| When ________ memory is obtain the shape and function of the neurons change. | long term memory |
| The ________ of the limbic system determines what type of the information you are exposed to and files in that corresponding lobe of the brain. | hippocampus |
| Stage of sleep when dreaming occurs. | REM |
| Stage of sleep that restful and dreamless. | Non REM |
| Pathway for ascending and descending information from the body to and from the brain. | spinal cord |
Created by:
alejoh9987
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