Slap Hands Game In the slap hands game
- Slides: 53
Slap Hands Game!
In the slap hands game, if your hands were on top what did you have to respond to?
Stimulus - any internal or external change or event that causes a response in an organism http: //www. livescience. com/33700 -bulls-charge-red. html
In the slap hands game, what body structures allowed you to detect and respond to the stimulus? • Sense organs (eyes, skin) • Nerves • Brain • Muscle
The Human Nervous System
What are some examples of stimuli that an organism might have to respond to? External • • • Predator Prey Food, Water Mates, Rivals Sunlight Temperature Internal • • • Hunger Full bladder Full rectum Blood sugar level Infection Temperature
Why is it important to be able to respond to stimuli? Survival Homeostasis - the maintenance of a stable internal environment in an organism
To maintain homeostasis, the activities performed by various structures have to be controlled and coordinated. Regulation - the coordination and control of all the life activities
How does our nervous system function? (How do nerve cells work? )
Neuron - the basic structural and functional unit of the nervous system Specialized cell for receiving and transmitting impulses (stimuli)
The Neuron Axon Terminal Branches
8. 1 - Soma (cell body) 2 - Axon 3 - Myelin Sheath 4 - Axon 5 - Node 6 - Dendrites 7 - Nucleus 8 - Terminal Branches
1. Describe the direction in which impulses (stimuli) are transmitted along a neuron.
2. What is a synapse? - the space between two neurons Synapse
How do neurons receive and send impulses? (How do nerve cells work? )
The membrane of a neuron (its dendrite) before the stimulus is polarized Sodium ions are like Black Friday shoppers
Stimulus opens ion channels Outside cell Inside cell
What happened to the charges? Membrane is depolarized Before Stimulus After Stimulus
How does a nerve impulse travel down the neuron?
axon
Krazy George Henderson • A High School teacher • Became a professional cheerleader • 1 st time was an accident delayed response of one section to his direction
Nerve impulse - a moving area of electrical and chemical change on the nerve cell membrane
The Myelin Sheath
Saltatory conduction - (leaping) influx of ions in one node causes next node to become permeable to sodium (sodium channels open)
Speed of a Nerve Impulse unmyelinated myelinated axons 3 mm/sec 200 M/sec (200, 000 mm/sec)
How does the nerve impulse get across the space between neurons? Synapse (the space between two neurons)
Animation of Synaptic Transmission http: //www. youtube. com/watch? v=HXx 9 ql. Jet. SU&feature=related
3. What is the chemical substance that transmits impulses across the synapse called? neurotransmitters
A Neuromuscular Junction Neurotransmitter Receptors
Slap Hands Activity
How does the nerve reset itself so it can fire another impulse?
The Sodium-Potassium Pump
acetylcholinesterase
Sarin Nerve Gas Sarin nerve gas inhibits the activity of an enzyme that is supposed to break down the neurotransmitter acetylcholine. This neurotransmitter makes skeletal muscles contract. Acetylcholine also acts at sites made of smooth muscle (the iris, respiratory and gastrointestinal tract, bladder, and blood vessels), cardiac muscle, as well as the salivary and sweat glands. Predict what would happen to the concentration of acetylcholine in the synapse and on postsynaptic receptors as a result of exposure to Sarin. Predict the effects of Sarin on the body.
Immediate signs and symptoms of sarin exposure • Runny nose • Watery eyes • Small, pinpoint pupils • Eye pain • Blurred vision • Drooling and excessive sweating • Cough • Chest tightness • Rapid breathing • Diarrhea • Nausea, vomiting, and/or abdominal pain • Increased urination • Confusion • Drowsiness • Weakness • Headache • Slow or fast heart rate • Low or high blood pressure
Cyanide is a fast-acting poison that can be lethal. In large doses, cyanide quickly binds with iron in cytochrome a 3, a protein in the mitochondria essential for the process of aerobic cellular respiration. Predict the effect of cyanide on ATP production and the kind of cellular respiration taking place in cells. Predict the effect of cyanide on nerve cell activity (e. g. sodiumpotassium pump; impulses traveling down the axon).
Synapse - space between two neurons synaptic knobs - secrete neurotransmitters into the synapse Neurotransmitters - chemicals that transmit impulses across a synapse
Myelin sheath - • wraps around axon • insulates axon
The Neuron
Nerve Impulse 1. sodium ions (Na+) flow into the cell 2. Inside of cell becomes positively charged 3. This change stimulates adjacent membrane to become permeable to sodium 4. More sodium flows into the cell in this adjacent area of membrane (step 1) 5. Repeat step 2 etc. . .
What structures on the membranes of our cells detect (receive) stimuli? ? Receptors - structures specialized to detect stimuli
Dendrites - receive stimuli (impulse) and conducts impulse to cell body, cyton (cell body) in a sensory neuron, the impulse comes from a stimulus
Axon - transmits or conducts impulses away from cell body toward terminal branches Terminal branches - conducts impulses to different synaptic knobs and then to different cells
- Slappy hands game
- Hands on hips
- Passed away euphemism
- Snyder slap classification
- Laringe equino
- Tickle and slap brecht
- Iq slapdown
- Slap suicidality
- Slip slop slap effectiveness
- Floorball campo de juego
- Thế nào là mạng điện lắp đặt kiểu nổi
- Các loại đột biến cấu trúc nhiễm sắc thể
- Bổ thể
- Vẽ hình chiếu đứng bằng cạnh của vật thể
- độ dài liên kết
- Các môn thể thao bắt đầu bằng tiếng bóng
- Sự nuôi và dạy con của hổ
- điện thế nghỉ
- Biện pháp chống mỏi cơ
- Một số thể thơ truyền thống
- Trời xanh đây là của chúng ta thể thơ
- So nguyen to
- Thiếu nhi thế giới liên hoan
- Tỉ lệ cơ thể trẻ em
- Tia chieu sa te
- Các châu lục và đại dương trên thế giới
- Thế nào là hệ số cao nhất
- Hệ hô hấp
- Tư thế ngồi viết
- Hát kết hợp bộ gõ cơ thể
- đặc điểm cơ thể của người tối cổ
- Cái miệng nó xinh thế chỉ nói điều hay thôi
- Mật thư anh em như thể tay chân
- Chụp tư thế worms-breton
- ưu thế lai là gì
- Tư thế ngồi viết
- Voi kéo gỗ như thế nào
- Thẻ vin
- Thể thơ truyền thống
- Các châu lục và đại dương trên thế giới
- Từ ngữ thể hiện lòng nhân hậu
- Diễn thế sinh thái là
- Frameset trong html5
- Ví dụ giọng cùng tên
- 101012 bằng
- Chúa yêu trần thế
- Khi nào hổ mẹ dạy hổ con săn mồi
- Lời thề hippocrates
- đại từ thay thế
- Quá trình desamine hóa có thể tạo ra
- Vẽ hình chiếu vuông góc của vật thể sau
- Công thức tính độ biến thiên đông lượng
- Game lab game theory
- Pirate game game theory