Science

•Download as PPTX, PDF•

0 likes•94 views

saman Iftikhar

information about skin

Science

PREVIOUS
LECTURE
CHAPTER 05
Atoms
Molecules
Mixtures
compounds

CHAPTER 02
SENSES AND SENSE ORGAN
SENSE
STIMULI
SENSORY CELLS
SENSE ORGANS
SKIN
MONTUEWEDTHUFRIWKND
TODAY'S TASK

● They receive stimuli
from our surrounding
and they grouped
together to form sense
organs
STIMULI
MONTUEWEDTUEFRIWKND
The message which we
receive from our
environment is called
stimuli
SENSORY CELL

SENSE
ORGANS
• Skin
• Nose
• Tongue
• Eye
• Ear

SKIN
TUEWEDFRIWKNDTHU
• 1.8 Square meter
• Protect bones and muscles
• Control temperature
• Makes vitamin D in the presence
of sunlight
• Also a sense organ
• Sensitive to touch pain
pressureheat and cold
THE LAYERS
OF
SKIN
Skin is made up of two layers
Epidermis
Dermis

Made up of dead cells
Surface of eyes hair skin
nails are made up of dead
cells
Epi means outer
Dermis means skin
OUTER SKIN EPIDERMIS

 Top layer of skin
 Made up of dead flattened
cells which make a tough
water proof cover
 20 k.g of dead skin is shed
by an average adult in life
time
 Lower layer of skin
is called dermis
 Contain sweat and
oil gland 'blood
vessels and fat
 Also contain many
nerve endings.,
where the senses of
touch , pressure,
pain and
temperature are
located
EPIDERMIS DERMIS

PAIN
RECEPTORS
 Pain receptors are
evenly distributed. over
the skin
 Pain is useful because
it act as a warning

TEMPERATURE
WKND
 Heat and cold
receptors are present
in skin
 Finger tips can detect
temperature
differences as small as
0.5C
TOUCH
AND
PRESSURE
 Most touch receptors and pressure
receptors in the skin of the tongue
and fingertips

Chapter :5
OBJECTIVES
WKND
Shade the correct answers.
1. Everything around us is made up of
tiny particles called----------.
a elements
b atoms
c electrons
2. Scientists have discovered - - - - -- -
elements.
a 117
b 118
c119
3.----- is not an element.
a Iron
b Carbon
c Steel
4 -- - - - is used for making aircrafts
and train carriages
a Copper
b Aluminium
c Gold
5 - - - - - - is used in many electronic
devices.
a Carbon
b Steel
c Gold.
6. Sulphur is a - - - - - - non metal.
a yellow
b pink
c blue

WKND
7 - - - - - - is used for making car
tyres.
a Carbon
b Iron
c Sulphur
8----------- is used as a fuel.
a Nitrogen
b Carbon
c Steel
9 Vinegar is a mixture of water and
- - - - - acid.
a citrus
b sulphuric
c acetic
10 Crude oil can be separated by -
- - - - - - -
a distillation
b filtration
c sublimation

Recently uploaded

Bacterial Identification and Classifications

Areesha Ahmad

Call Girls In Safdarung Enclave Arjun Nagar Whatsapp +91 9654467111 Delhi ⛟ Open 24 Hrs, ☎ Booking Short 2000 Night 6000 ALL HOME/HOTEL SERVICE DOORSTEP SERVICE IN/CALL & OUT/CALL SERVICE WITH MANY OPTIONS AVAILABLE DELHI GURGAON & NOIDA SERVICE IN REASONABLE RATES FROM LOW TO HIGH PROFILE STAFF’S. Call Girl Number~24X7~Call Girl Services, New Delhi, Delhi OutCall Rate Call Girl Mahipalpur,Call Girl Connaught Place,Call Girl Nehru Place,Call Girl Chanakyapuri,Call Girl Paharganj,Call Girl Dhaula Kuan,Call Girl Moti Bagh,Call Girl Karol Bagh,Call Girl Greater Kailash,Call Girl Naraina, Call Girl Katwaria Sarai,Call Girl Janakpuri,Call Girl Kalkaji,Call Girl Lajpat Nagar,Call Girl Palam,Call Girl Malviya Nagar,Call Girl Mehrauli,Call Girl Govindpuri,Call Girl Sarojini Nagar ,Call Girl Neb Sarai,Call Girl South Ex,Call Girl Munirka,Call Girl Saket,Call Girl Chattarpur

9654467111 Call Girls In Raj Nagar Delhi Short 1500 Night 6000

Sapana Sha

Recombinant DNA technology (Immunological screening)

PraveenaKalaiselvan1

Chemical Tests; flame test, positive and negative ions test Edexcel Internati...

ssuser79fe74

Presentation Vikram Lander by Vedansh Gupta.pptx

gindu3009

GBSN - Microbiology (Unit 1)

Areesha Ahmad

Cotton crops are vulnerable to a variety of sucking pests, which can severely impact plant health, yield, and fiber quality. These pests primarily feed on plant sap, extracting nutrients directly from the plant's vascular system. Here's a breakdown of some of the most significant sucking pests in cotton cultivation: Aphids: Cotton aphids or melon aphids can cause direct damage by sucking sap and indirect damage by secreting honeydew, which encourages sooty mold growth. This can interfere with photosynthesis and weaken the plant. Aphids can also transmit viral diseases. Whiteflies: Two species, the silverleaf whitefly and the bandedwinged whitefly, are particularly troublesome. They not only suck sap from the underside of leaves, causing yellowing and leaf drop, but their honeydew excretion promotes sooty mold and they can transmit several plant viruses. Thrips: While thrips can chew on plants, their primary damage to cotton is through sucking. They attack the cotton plant during its seedling stage, which can stunt growth and reduce vigor. Thrips are also capable of transmitting the Cotton Bud disease. Spider Mites: These are not insects but arachnids. Spider mites, such as the two-spotted spider mite, suck cell contents from the leaves, leading to speckled discoloration and potentially significant leaf loss if infestations are severe. Leafhoppers: Including various species, leafhoppers can cause direct damage through feeding, which results in leaf curling and stunted growth. They can also be vectors for plant diseases. Mealybugs: These pests are less common but can be problematic, especially in clustered planting conditions. They suck sap and secrete honeydew, which leads to sooty mold. Mealybugs can also spread viruses. Stink Bugs: Although primarily known for their chewing mouthparts, certain stink bugs can cause damage similar to sucking pests by injecting saliva into the plant and sucking out nutrients, leading to boll damage and stained lint. Management Strategies: Cultural Controls: This includes practices such as crop rotation, using resistant varieties, and managing planting and harvesting times to avoid peak pest populations. Biological Controls: Beneficial insects like lady beetles, lacewings, and predatory mites can naturally control sucking pest populations. Parasitic wasps also play a role in controlling aphid and whitefly populations. Chemical Controls: Insecticides may be used but should be chosen carefully to minimize resistance development and preserve beneficial insects. Systemic insecticides can be particularly effective against sucking pests. Integrated Pest Management (IPM): Combining multiple control strategies based on monitoring and thresholds to apply the most effective and environmentally sensitive approach. Effective management of sucking pests in cotton requires a thorough understanding of the pest species present, their life cycles, and the ecological balance of the field environment.

Pests of cotton_Sucking_Pests_Dr.UPR.pdf

PirithiRaju

Hire 💕 9907093804 Hooghly Call Girls Service Call Girls Agency

Sheetal Arora

Vip CALL GIRL IN Lonavala 9748763073❤CALL GIRLS IN ESCORT SERVICE❤CALL GIRL IN We are Providing :- ● – Private independent collage Going girls . ● – independent Models . ● – House Wife’s . ● – Private Independent House Wife’s ● – Corporate M.N.C Working Profiles . ● – Call Center Girls . ● – Live Band Girls . ●- Foreigners & Many More . Service type: 1.In call 2.out call 3. full Lip to Lip kiss 4.69 5.b-job without Condom 6. Hard Core sex & Much More. 7 Body to Body Touch 8 Kissing 9 Sucking Boobs and More 10 Enjoy by Hand 11 Relax By Oral 12 Sex with Happy Ending • In Call and Out Call Service • 3* 5* 7* Hotels Service • 24 Hours Available • Indian, Russian, Punjabi, Kashmiri Escorts • Real Models, College Girls, House Wife, Also Available • Short Time and Full Time Service Available • Hygienic Full AC Neat and Clean Rooms Avail. In Hotel 24 hours • Daily Escorts Staff Available • Minimum to Maximum Range Available.c

Vip profile Call Girls In Lonavala 9748763073 For Genuine Sex Service At Just...

Monika Rani

Wepresent Atacama Large Millimeter/submillimeter Array 12-m, 7-m, and Total Power Array observations of the FUOrionis outbursting system, covering spatial scales ranging from 160 to 25,000 au. The high-resolution interferometric data reveal an elongated 12CO(2–1) feature previously observed at lower resolution in 12CO(3–2). Kinematic modeling indicates that this feature can be interpreted as an accretion streamer feeding the binary system. The mass infall rate provided by the streamer is significantly lower than the typical stellar accretion rates (even in quiescent states), suggesting that this streamer alone is not massive enough to sustain the enhanced accretion rates characteristic of the outbursting class prototype. The observed streamer may not be directly linked to the current outburst, but rather a remnant of a previous, more massive streamer that may have contributed enough to the disk mass to render it unstable and trigger the FU Orionis outburst. The new data detect, for the first time, a vast, slow-moving carbon monoxide molecular outflow emerging from this object. To accurately assess the outflow properties (mass, momentum, and kinetic energy), we employ 13CO(2–1) data to correct for optical depth effects. The analysis indicates that the outflow corresponds to swept-up material not associated with the current outburst, similar to the slow molecular outflows observed around other FUor and Class I protostellar objects.

Discovery of an Accretion Streamer and a Slow Wide-angle Outflow around FUOri...

Sérgio Sacani

The presentation first gives the brief introduction about the animal communication covering the reasons for communication. It then describes the important types of animal communication emphasizing the important points regarding auditory and visual communication. With respect to auditory communication, it covers the uses of it and mechanisms of auditory communication along with examples. Later the presentation discusses the various forms of visual communication such as gestures, postures, facial expressions, color changes , bioluminescent communication. It then describes the visual communication in bees in the form of bee dance . In bee dance it gives a brief overview of round dance , sickle dance and waggle dance .

Animal Communication- Auditory and Visual.pptx

UmerFayaz5

Chemistry is the scientific study of matter, its properties, composition, structure, and the changes it undergoes. It's often divided into various sub-disciplines such as organic chemistry, inorganic chemistry, physical chemistry, analytical chemistry, and biochemistry. Chemistry plays a crucial role in understanding the world around us and has applications in various fields such as medicine, materials science, environmental science, and industry.

Chemistry 4th semester series (krishna).pdf

Sumit Kumar yadav

We explore different scenarios to explain the chemical difference found in the remarkable giant-giant binary system HD138202+CD−3012303. For the first time, we suggest how to distinguish these scenarios by taking advantage of the extensive convective envelopes of giant stars. Methods. We carried out a high-precision determination of stellar parameters and abundances by applying a full line-by-line differential analysis on GHOST high-resolution spectra. We used the FUNDPAR program with ATLAS12 model atmospheres and specific opacities calculated for an arbitrary composition through a doubly iterated method. Physical parameters were estimated with the isochrones package and evolutionary tracks were calculated via MIST models. Results. We found a significant chemical difference between the two stars (∆[Fe/H]∼0.08dex), which is largely unexpected considering the insensitivity of giant stars to planetary ingestion and diffusion effects. We tested the possibility of engulfment events by using several different combinations of stellar mass, ingested mass, metallicity of the engulfed object and different convective envelopes. However, the planetary ingestion scenario does not seem to explain the observed differences. For the first time, we distinguished the source of chemical differences using a giant-giant binary system. By ruling out other possible scenarios such as planet formation and evolutionary effects between the two stars, we suggest that primordial inhomogeneities might explain the observed differences. This remarkable result implies that the metallicity differences that were observed in at least some main-sequence binary systems might be related to primordial inhomogeneities rather than engulfment events. We also discuss the important implications of finding primordial inhomogeneities, which affect chemical tagging and other fields such as planet formation. We strongly encourage the use of giantgiant pairs. They are a relevant complement to main-sequence pairs for determining the origin of the observed chemical differences in multiple systems.

Disentangling the origin of chemical differences using GHOST

Sérgio Sacani

Nanoparticles synthesis and characterization

kaibalyasahoo82800

Creating and Analyzing Definitive Screening Designs

NurulAfiqah307317

High Class Escorts in Hyderabad ₹7.5k Pick Up & Drop With Cash Payment 969456...

chandars293

Theoretical predictions and observational data indicate a class of sub-Neptune exoplanets may have water-rich interiors covered by hydrogen-dominated atmospheres. Provided suitable climate conditions, such planets could host surface liquid oceans. Motivated by recent JWST observations of K2-18 b, we self-consistently model the photochemistry and potential detectability of biogenic sulfur gases in the atmospheres of temperate sub-Neptune waterworlds for the first time. On Earth today, organic sulfur compounds produced by marine biota are rapidly destroyed by photochemical processes before they can accumulate to significant levels. Domagal-Goldman et al. suggest that detectable biogenic sulfur signatures could emerge in Archean-like atmospheres with higher biological production or low UV flux. In this study, we explore biogenic sulfur across a wide range of biological fluxes and stellar UV environments. Critically, the main photochemical sinks are absent on the nightside of tidally locked planets. To address this, we further perform experiments with a 3D general circulation model and a 2D photochemical model (VULCAN 2D) to simulate the global distribution of biogenic gases to investigate their terminator concentrations as seen via transmission spectroscopy. Our models indicate that biogenic sulfur gases can rise to potentially detectable levels on hydrogen-rich water worlds, but only for enhanced global biosulfur flux (20 times modern Earth’s flux). We find that it is challenging to identify DMS at 3.4 μm where it strongly overlaps with CH4, whereas it is more plausible to detect DMS and companion byproducts, ethylene (C2H4) and ethane (C2H6), in the mid-infrared between 9 and 13 μm. Unified Astronomy Thesaurus concepts: Exoplanet atmospheres (487); Exoplanet

Biogenic Sulfur Gases as Biosignatures on Temperate Sub-Neptune Waterworlds

Sérgio Sacani

Labelling Requirements and Label Claims for Dietary Supplements and Recommend...

Lokesh Kothari

RecoveringancientrecordsofEarth'smagneticfieldisessentialfordeterminingtheroleofthemagnetosphereinprotectingearlyEarthfromcosmicradiationandatmosphericescape.WepresentpaleomagneticfieldtestshintingthatarecordofEarth's3.7‐billion‐year(Ga)oldmagneticfieldmaybepreservedinthenortheasternIsuaSupracrustalBeltasachemicalremanentmagnetizationacquiredduringamphibolite‐grademetamorphisminthebandedironformation.MultiplepetrologicalandgeochronologicallinesofevidenceindicatethatthenorthernmostpartofIsuahasnotexperiencedmetamorphictemperaturesexceeding380°CsincetheEoarchean,suggestingtherockshavenotbeensignificantlyheatedsincemagnetizationwasacquired.Weuse“pseudo”bakedcontacttests(intrusionsemplaced3.26–3.5Gaago)andafoldtest(folding3.6Gaago)todemonstratethatsomesamplespreserveaca.3.7Garecordofthemagneticfield.Werecoverafieldstrengthof>15μT.ThissuggeststhatEarth'smagneticfieldmayhavebeenweakenoughtoenhanceatmosphericescapeduringtheArchean

PossibleEoarcheanRecordsoftheGeomagneticFieldPreservedintheIsuaSupracrustalBe...

Sérgio Sacani

Small size (20-300 nm) / bacteria (size measured in μm) Viral genome – single type of nucleic acid: DNA – dezoxyriboviruses RNA - riboviruses Totally dependant on living cells for all metabolic processes May infect humans, animals, plants, bacteria, fungi,parasites, insects Virion = viral corpuscle = elementary, infectious unit. Only visible by electron microscopy. Laboratory diagnosis of viral infections Methods: • Cytology • Electron microscopy • Cultivation • Detection of viral proteins • Serology • Molecular diagnosis (detection of genetic material i.e. nucleic acids) PPT prepared by Dr. Prince C P

VIRUSES structure and classification ppt by Dr.Prince C P

PRINCE C P

Recently uploaded (20)

Bacterial Identification and Classifications

9654467111 Call Girls In Raj Nagar Delhi Short 1500 Night 6000

Recombinant DNA technology (Immunological screening)

Chemical Tests; flame test, positive and negative ions test Edexcel Internati...

Presentation Vikram Lander by Vedansh Gupta.pptx

GBSN - Microbiology (Unit 1)

Pests of cotton_Sucking_Pests_Dr.UPR.pdf

Hire 💕 9907093804 Hooghly Call Girls Service Call Girls Agency

Vip profile Call Girls In Lonavala 9748763073 For Genuine Sex Service At Just...

Discovery of an Accretion Streamer and a Slow Wide-angle Outflow around FUOri...

Animal Communication- Auditory and Visual.pptx

Chemistry 4th semester series (krishna).pdf

Disentangling the origin of chemical differences using GHOST

Nanoparticles synthesis and characterization

Creating and Analyzing Definitive Screening Designs

High Class Escorts in Hyderabad ₹7.5k Pick Up & Drop With Cash Payment 969456...

Biogenic Sulfur Gases as Biosignatures on Temperate Sub-Neptune Waterworlds

Labelling Requirements and Label Claims for Dietary Supplements and Recommend...

PossibleEoarcheanRecordsoftheGeomagneticFieldPreservedintheIsuaSupracrustalBe...

VIRUSES structure and classification ppt by Dr.Prince C P

Science

2. PREVIOUS LECTURE CHAPTER 05 Atoms Molecules Mixtures compounds

3. CHAPTER 02 SENSES AND SENSE ORGAN SENSE STIMULI SENSORY CELLS SENSE ORGANS SKIN MONTUEWEDTHUFRIWKND TODAY'S TASK

4. ● They receive stimuli from our surrounding and they grouped together to form sense organs STIMULI MONTUEWEDTUEFRIWKND The message which we receive from our environment is called stimuli SENSORY CELL

7. SENSE ORGANS • Skin • Nose • Tongue • Eye • Ear

8. SKIN

9. SKIN TUEWEDFRIWKNDTHU • 1.8 Square meter • Protect bones and muscles • Control temperature • Makes vitamin D in the presence of sunlight • Also a sense organ • Sensitive to touch pain pressureheat and cold THE LAYERS OF SKIN Skin is made up of two layers Epidermis Dermis

10.

11. OUTER SKIN

12. Made up of dead cells Surface of eyes hair skin nails are made up of dead cells Epi means outer Dermis means skin OUTER SKIN EPIDERMIS

13.  Top layer of skin  Made up of dead flattened cells which make a tough water proof cover  20 k.g of dead skin is shed by an average adult in life time  Lower layer of skin is called dermis  Contain sweat and oil gland 'blood vessels and fat  Also contain many nerve endings., where the senses of touch , pressure, pain and temperature are located EPIDERMIS DERMIS

14.

15. PAIN

16. PAIN RECEPTORS  Pain receptors are evenly distributed. over the skin  Pain is useful because it act as a warning

17. TEMPERATURE WKND  Heat and cold receptors are present in skin  Finger tips can detect temperature differences as small as 0.5C TOUCH AND PRESSURE  Most touch receptors and pressure receptors in the skin of the tongue and fingertips

18.

19. Chapter :5 OBJECTIVES WKND Shade the correct answers. 1. Everything around us is made up of tiny particles called----------. a elements b atoms c electrons 2. Scientists have discovered - - - - -- - elements. a 117 b 118 c119 3.----- is not an element. a Iron b Carbon c Steel 4 -- - - - is used for making aircrafts and train carriages a Copper b Aluminium c Gold 5 - - - - - - is used in many electronic devices. a Carbon b Steel c Gold. 6. Sulphur is a - - - - - - non metal. a yellow b pink c blue

20. WKND 7 - - - - - - is used for making car tyres. a Carbon b Iron c Sulphur 8----------- is used as a fuel. a Nitrogen b Carbon c Steel 9 Vinegar is a mixture of water and - - - - - acid. a citrus b sulphuric c acetic 10 Crude oil can be separated by - - - - - - - - a distillation b filtration c sublimation

21. Any Question…? ???

Science

Recommended

Recommended

More Related Content

More from saman Iftikhar

More from saman Iftikhar (6)

Recently uploaded

Recently uploaded (20)

Science