Start Discovering Solved Questions and Your Course Assignments
TextBooks Included
Active Tutors
Asked Questions
Answered Questions
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
q define central nervous systemthe nervous system begins as a simple tube during embryonic development then anterior part expands and also ventricles
q what do you mean by nervous systemstructural organization cns pnsfunctional organization only concerned with pnssensory afferent -gt
q evolutionarily protochordates may be intermediate animals between invertebrates and vertebrates imagine a scientist is testing the hypothesis that
q what are the six criteria used to build a complete evolutionary branch of vertebratesdichotomy in each of the six following criteria builds the
into which subphyla are the protochordates divided what are some representatives of each protochordate subphylumcephalochordates and urochordates or
q how do chordates reproducereproduction in beings of the phylum chordata is sexual with the exception of urochordates that can be also reproduce