Introduction to Pharmacology Chapter 1 – Pharmacology intro Pharmacology is the study of drugs. A drug can be any substance that‚ when administered to living organisms‚ produces a change in function. Thus‚ substances such as water‚ metals (iron)‚ or insecticides can be classified as drugs. However‚ the term drug commonly means any medication that is used for diagnosing‚ curing‚ or treating disease Every drug produces its intended effect‚ or therapeutic effect‚ along with other effects. The therapeutic
Premium Acetylcholine Autonomic nervous system Nervous system
THE MUSCULAR SYSTEM DocPoks Pangan M.D Natural Science • The bones‚ muscles and joints together form an integrated system called the Musculoskeletal System • Myology is the scientific study of muscles • Muscular system is an organ system consisting of skeletal‚ smooth and cardiac muscles • Orthopedics is the branch of medical science concerned with the prevention or correction of the disorders of the musculoskeletal system ANTERIOR VIEW POSTERIOR VIEW FUNCTIONS OF THE MUSCLES • • • • Movement
Free Muscle Muscular system Skeletal muscle
Thursday‚ January 30‚ 2014 Nervous Tissue ! Anatomy & Physiology - Overall Purpose of the Nervous System ! • To keep controlled conditions within limits that maintain life health and homeostasis ! - Regulates body activities by responding via nerve impulses‚ works with the endocrine system which responds by releasing hormones ! • Responsible for our behavior‚ memories‚ and movements ! • Neurology : branch of medicine that deals with normal functioning and disorders of the nervous system
Premium Action potential Neuron
The pigment in the muscle fibers that stores oxygen is A) hemoglobin. B) myoglobin. C) melanin. D) melanin. E) glycogen. Answer: B Reference: Skeletal Muscle Tissue Degree of Difficulty: Medium 7. The neurotransmitter at the neuromuscular junction is A) norepinephrine. B) acetylcholine. C) adrenaline. D) calcium. E) glycine. Answer: B Reference: Contraction and Relaxation of Skeletal Muscle Degree of Difficulty: Medium 8. Tunnel-like extensions of the sarcolemma into the
Premium Muscle Skeletal muscle Muscular system
Muscle contractions happen when muscle fibers are stimulated‚ which can cause one of many types of contractions. Isometric contractions‚ which means that tension happens in the muscle but there is no change in muscle length‚ therefore there is no movement of the muscle itself. An example of Isometric contractions would be strength training‚ such as holding a weight still‚ which happens in the biceps brachii. The biceps brachii the gets more tension‚ but the muscle length stays the same. As for isotonic
Premium Metabolism Glucose Adenosine triphosphate
Muscle Tissue Introduction * Motion * Results from alternating contraction (shortening) and relaxation of muscles * Skeletal system * Provides leverage and a supportive framework for this movement * Myology – study of muscles Muscle Tissue * Alternating contraction and relaxation of cells * Chemical energy changed into mechanical energy Types of Muscle Tissue * Skeletal muscle – primarily attached to bones * Striated and voluntary * Cardiac
Premium Muscle Muscle contraction Skeletal muscle
Chapter 12: Neural Tissue - An Introduction to the Nervous System Learning Outcomes 12-1 Describe the anatomical and functional divisions of the nervous system. 12-2 Sketch and label the structure of a typical neuron‚ describe the functions of each component‚ and classify neurons on the basis of their structure and function. 12-3 Describe the locations and functions of the various types of neuroglia. 12-4 Explain how the resting potential is created and maintained. 12-5 Describe the events
Premium Brain Nervous system Neuron
The motor neuron branches into terminal structures called telodendria that come into close approximation with a portion of the sarcolemma o a muscle fiber (muscle cell). The site where the neuron and muscle fiber meet is called a neuromuscular junction. At this junction the muscle fiber membrane is specialized to form a motor end plate. The sensitivity of a muscle fiber to
Premium Muscle Myosin Muscular system
Signs and symptoms of multiple sclerosis vary from each individual and are dependent on the location of the affected nerve fibers. Common symptoms include: numbness and weakness that occurs in one or more limbs and usually occurs on only one side of the body at a time‚ partial or complete loss of vision in usually one eye‚ pain with eye movements‚ double vision that lasts for a long period of time‚ fatigue‚ slurred speech‚ tremors‚ unsteady gait‚ tingling or pain throughout body‚ problems with bowel
Premium Nervous system Pregnancy Brain
Muscle fibers are the basic building blocks of the muscle and what allow muscles to contract. They appear as long cylinder cells that contain several nuclei. Contraction happens when the muscle receive signals from the nervous system and the Neuromuscular Junction obtains the muscular exchange where the synaptic bulb and the muscle fibers connect. muscle fibers are composed of myofibrils‚ which contain contractile units called sarcomeres. Sarcomeres run alongside each other down the length of the myofibril
Premium Muscle Muscular system Myosin