Презентация на тему: Theory of P hylembryogenesis ; Phylogenesis of Avian Nervous System &

Theory of P hylembryogenesis ; Phylogenesis of Avian Nervous System & Developmental Nervous System disorder of Human
Theory of P hylembryogenesis ; Phylogenesis of Avian Nervous System &
1. Phylembryogenesis
Theory of P hylembryogenesis ; Phylogenesis of Avian Nervous System &
2. DEVIATION
Examples
birds
3. AVIAN BRAIN STRUCTURE
4. SENSES
5. MEMORY CAPABILITY
6. Visual capacity
7. developemental Nervous system disorder of human
b) P arkinson’s disease
c) Cerebral palsy
d) Aphasia
e) Carpal Tunnel Syndrome
f) Amytrophic lateral Sclerosis
Theory of P hylembryogenesis ; Phylogenesis of Avian Nervous System &
Theory of P hylembryogenesis ; Phylogenesis of Avian Nervous System &
1/19
Средняя оценка: 4.9/5 (всего оценок: 59)
Код скопирован в буфер обмена
Скачать (3780 Кб)
1

Первый слайд презентации: Theory of P hylembryogenesis ; Phylogenesis of Avian Nervous System & Developmental Nervous System disorder of Human

Course Students Sinchan Poojary & Sandip K umar Mondal Scientific Leader Svetlana Smirnova

Изображение слайда
2

Слайд 2

Изображение слайда
3

Слайд 3: 1. Phylembryogenesis

A theory put forward by Russian palaeontologist Severtsov, postulating that  phylogenetic changes in organisms are conditioned by   ontogenetic   alterations, in that certain events are added, modified or deleted in the development of an embryo based on the events of   ancestral development.

Изображение слайда
4

Слайд 4

According to the theory of A.N.Severtsov Phylembryology : Changes resulting from genotyepe adjustment during embryonic development and having a phylogenetic significance. Adjustment of the genotype, which can occour through mutation and natural selection, not only at the end of the ontogeny asconsidered by Heckel,but also primary, middle,and end stages of ontogeny Changes that can actively influence the evolution of the species

Изображение слайда
5

Слайд 5: 2. DEVIATION

The theory of phylembryogeny rests mainly on the concept of the predominance of ontogenetic change over phylogenetic (evolutionary) change. If the course of ontogeny did not change, organisms would not differ from their ancestors.One of the most important mode of phylembryology is deviation ( changes in the middle stage)

Изображение слайда
6

Слайд 6: Examples

Development of scales in Reptiles ; initially the process goes according to phylogenesis (partial recapitulation), and in the middle of morphogenesis muted genes interfere with the work and the course takes another direction.

Изображение слайда
7

Слайд 7: birds

Изображение слайда
8

Слайд 8: 3. AVIAN BRAIN STRUCTURE

The avian brain includes : 1) medulla - part of the brainstem 2) neurons that help control heart rate, respiration, & blood pressure. 3)optic lobe - part of the midbrain; relatively large in birds compared to other vertebrates (reflecting the importance of vision for most birds)

Изображение слайда
9

Слайд 9: 4. SENSES

The difficulty of defining or measuring intelligence in non-human animals makes the subject difficult to study scientifically in birds. In general, birds have relatively large brains compared to their head size. The visual and auditory senses are well developed in most species, though the tactile and olfactory senses are well realized only in a few groups. Birds communicate using visual signals as well as through the use of calls and song. The testing of intelligence in birds is therefore usually based on studying responses to sensory stimuli.

Изображение слайда
10

Слайд 10: 5. MEMORY CAPABILITY

Scientists have discovered that the common pigeon actually has an astonishingly good long-term memory. In tests they found a single  bird  can memorise 1,200 pictures  "Pigeons are very visual animals and we knew they had good memories, but we didn't know they were this good," said Dr Fagot.

Изображение слайда
11

Слайд 11: 6. Visual capacity

The  optic lobes  of a bird or reptile are also part of the midbrain. T he  optic lobes of a bird are much larger than the optic lobes of a lizard. We know that   birds have the best vision of any vertebrates. The large optic lobes of a bird process the complex signals sent from the eye.

Изображение слайда
12

Слайд 12: 7. developemental Nervous system disorder of human

Alzheimers Disease A progressive disease that destroys memory and other important mental functions.Brain cell connections and the cells themselves degenerate and die, eventually destroying memory and other important mental functions.

Изображение слайда
13

Слайд 13: b) P arkinson’s disease

In Parkinson's disease, certain nerve cells (neurons) in the brain gradually break down or die. Many of the symptoms are due to a loss of neurons that produce a chemical messenger in your brain called dopamine. When dopamine levels decrease, it causes abnormal brain activity, leading to symptoms of Parkinson's disease.

Изображение слайда
14

Слайд 14: c) Cerebral palsy

Cerebral palsy (CP) is a group of disorders that affect a person’s ability to move and maintain balance and posture. CP is the most common motor disability in childhood. Cerebral means having to do with the brain. Palsy means weakness or problems with using the muscles. CP is caused by abnormal brain development or damage to the developing brain that affects a person’s ability to control his or her muscles.

Изображение слайда
15

Слайд 15: d) Aphasia

Aphasia  is an inability to comprehend or formulate language because of damage to specific brain regions.  The major causes are a cerebral vascular accident (stroke), or head trauma, but aphasia can also be the result of brain tumors, brain infections, or neurodegenerative diseases such as dementia.

Изображение слайда
16

Слайд 16: e) Carpal Tunnel Syndrome

A numbness and tingling in the hand and arm caused by a pinched nerve in the wrist.Wrist anatomy, underlying health conditions, and patterns of hand use can contribute to carpal tunnel syndrome.

Изображение слайда
17

Слайд 17: f) Amytrophic lateral Sclerosis

ALS, is a progressive nervous system disease that affects nerve cells in the brain and spinal cord, causing loss of muscle control.ALS is often called Lou Gehrig's disease. ALS often starts in the hands, feet or limbs, and then spreads to other parts of your body. As the disease advances and nerve cells are destroyed, your muscles get weaker. This eventually affects chewing, swallowing, speaking and breathing.There's generally no pain in the early stages of ALS, and pain is uncommon in the later stages. ALS doesn't usually affect your bladder control or your senses.

Изображение слайда
18

Слайд 18

https://www.youtube.com/watch?v=BtLyik7oAxc https://www.youtube.com/watch?v=CdR6Q2JLHps https://www.youtube.com/watch?v=bp9OTg9BZV4

Изображение слайда
19

Последний слайд презентации: Theory of P hylembryogenesis ; Phylogenesis of Avian Nervous System &

Изображение слайда