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q how is excretion done in fishesfishes have a pair of kidneys that filtrate the blood bony fishes excrete nitrogen as ammonia nh3 they are
q do fishes present an closed or open circulatory system how many chambers does a fish heart have how does blood flow throughout the fish bodyas in
q how do fishes do gas exchangefishes breath through gills branchiae or gills are highly vascularized organs specialized in gas exchange under water
q how does the swim bladder of fishes work allowing fishes to control their depth under waterfrom hydrostatics it is known that an object does not
q how different are the swimming strategies in chondrichthyes and in osteichthyes why do sharks need to agitate their body to swim while bony fishes
q what are the major features of fishes associated to the habitat where they livefishes are all aquatic animals and thus they have a hydrodynamic
q from which features do osteichthyes and condrichthyes get these nameschondros means cartilage ictis means fish both from the greek the name
q what are the two major classes into which fishes are dividedans fishes are divided into two major classes osteichthyes bony fishes tuna sardines
q chordate identity card how are they characterized according to examples of representing beings type of symmetry basic morphology germ layers and
q define pacinian corpusculespacinian corpuscules are an example of sensory receptors scattered deep in the subcutaneous tissue underlying skin or in
q describe sensory receptorsreceptor organs can detect external or internal stimuli they can be classified according to the stimulus to which they
q what is the use of adrenergic receptoradrenergic receptors are also subdivided into 2 major categories alpha alpha - or- beta betain general when
q what do you mean by neurotransmitters- nicotinic receptors nicotine mimics the effects of ach here found at nm-junction ans ganglions in general
q nervous system control of blood pressuremost nervous controls are achieved via involuntary reflex arcs involving pressoreceptors the vasomotor
q show the regulation of blood pressurenervous system control of bpmaintains primarily an adequate systemic bp and alters blood distribution in body
q what functions regulates by hypothalamushypothalamus - main visceral control center of the body yet small in size central to virtually all
q show geniculate bodies of the thalamusthalamus - two large circular shaped masses at roof of 3rd brain ventricle contains many different nuclei
q show imbalances of basal nucleibasal nuclei - gray matter islands located deep within cerebral white matter these nuclei process a variety of
q define cerebral hemisphere tissuecerebral white matter - the remaining cerebral hemisphere tissue is the deeper cerebral white matter 60 of
q what are anteromedial aspects of temporal lobesolfactory cortex - found in anteromedial aspects of temporal lobes receive sensory information
q what do you mean by primary visual and auditory cortexprimary visual cortex - in posterior aspects of occipital lobes receives visual
q define primary and somatic sensory areaprimary sensory area - located in postcentral gyrus in parietal lobes just posterior to central sulcus
q define premotor cortex located in the frontal lobespremotor cortex - involved in control of more complex learned motor skills like writing driving
q what is primary motor cortexlocated in precentral gyrus of frontal lobe anterior to central sulcus which separates frontal and parietal lobes
q what is bathing in cerebro-spinal fluidthe cns is bathing in cerebro-spinal fluid or csf similar to plasma less protein rich in ascorbic acid