symmetry Have no organs Have no nervous system Are filter feeders Are multicellular Live in aquatic environments What are sponges? Sponges are a group of aquatic invertebrates (animal without a backbone). There are five thousand to ten thousand known species. Sponges are multicellular organisms which have bodies full of pores and channels‚ allowing water to circulate through them. Sponges do not have nervous‚ digestive or circulatory systems. Instead most rely on a constant water
Premium Animal Cnidaria Nervous system
Neurons: The Basic Elements of Behavior Neurons‚ or otherwise called nerve cells‚ are the basic elements of our nervous systems. We have as many as one trillion nerve cells throughout our bodies. These cells are responsible for controlling our behavior. So what is a neuron? “A neuron is a nerve cell that is the basic building block of the nervous system. Neurons are similar to other cells in the human body in a number of ways‚ but there is one key difference between neurons and other cells
Premium Nervous system Neuron Electric charge
|[pic] |Syllabus | | |College of Social Sciences | | |PSY/240 Version 7 | |
Free Sleep Sleep deprivation Psychology
490-500 deferred until the Mar 31st lecture) + Handout #07 (annotated Chpt 12) The Evolution of Matting Patterns section from The Genetics & Evolution of Behavior The Brain and the Nervous System + Handout #16 (annotated Chpt 3) The Brain and the Nervous System + Handout #16 (annotated Chpt 3) The Brain and the Nervous System + Handout #16 (annotated Chpt 3) Sensation (omit Vestibular Sense thru Hearing‚ pp.145-159) + Handout #33 (annotated Chpt 4) Sensation (omit Vestibular Sense thru Hearing‚ pp
Premium Psychology Nervous system 1922
The human beings’ nervous system consists of the brain‚ spinal cord‚ and the nerves. The nervous system enables a way for the brain to receive information about someone’s surrounding. Then‚ the brain is able to send signals to various areas of the body‚ so it can respond. Millions and millions of cells called neurons creates the nervous system. “Specialized neurons called receptors are located in the ears and eyes and the other sense
Premium Nervous system Neuron Nerve
Introduction Tissue just means a group of cells that together carry out a particular job in your body. There are four different types of tissue within the human body. This consists of the connective tissue‚ the epithelial tissue‚ the muscle tissue and the nervous tissue. Each of these tissues are vital for our bodies and each tissue has a very important role to fulfil. Epithelial tissue Epithelial tissue protects your body from moisture loss‚ bacteria‚ and internal injury. It is made up of cells closely packed
Premium Connective tissue Muscle Tissues
develop a holistic view‚ we analyse a blind man. Since this person has lost one of his senses he is much more dependant on other senses such as touch for example. Therefore the mind muscle connection has created strong links between the brain/nervous system and nerves in his fingers (braille) to ensure the human flys (recalling upon both the fight or flight theory and Darwin’s natural selection - and also a point that Tread-m touched upon in his most recent post‚ the Causality Paradigm - Cause and
Premium Nervous system Muscle Axon
HYPONATRAEMIA IN THE NEUROSURGICAL PATIENT INTRODUCTION Sodium the most abundant electrolyte in the human body‚ and therefore the osmolality of body fluids is strongly dependent on its concentration. Osmolality in turn is important in maintaining homeostasis within the brain. Ironically‚ dysfunction of the brain can cause changes in sodium homeostasis. To avoid neurological deterioration‚ morbidity or mortality the sodium level must be corrected promptly. The two most common causes of hyponatraemia
Premium Traumatic brain injury Brain Neuron
00 % (A) When responding to your classmates‚ make sure you respond to your classmates with the same alacrity as your original posts. Gravity and Transpiration Discussion Forum 80.00 % (B) Plant Hormones Discussion Forum 90.00 % (A) Nervous System Discussion Forum 90.00 % (A) The Senses Discussion Forum 90.00 % (A) Immunity Discussion Forum 90.00 % (A) Diet and Nutrition Discussion Forum 90.00 % (A) Hormone Signaling Discussion Forum - Behavioral Ecology Discussion Forum
Free Evolution Extinction Animal
biopsychology‚ neuroscience Starting small: The Neuron neuron: a nerve cell; receives signals from other neurons or sensory organs‚ processes these signals‚ and sends signals to other neurons‚ muscles‚ or bodily organs the basic unit of the nervous system The Neuron 3 types of neurons: 1. sensory neurons: respond to input from sensory organs (skin‚ eyes‚ etc.) 2. motor neurons: send signals to muscles to control movement 3. interneurons: connect the sensory neurons and motor neurons
Premium Brain Neuron Nervous system