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- Match the organ systems in column A with the functions in column B. Place the letter of your choice in the spaceprovided.Column A Column B1. the main system that secretes hormones2. provides an outer covering of the body3. produces a new organism4. stimulates muscles to contract and interprets information from sensoryunits5. provides a framework for soft tissues and produces blood cells in redmarrow6. exchanges gases between air and blood7. transports excess fluid from tissues to blood8. maintains posture and generates most body heat9. removes liquid and wastes from blood and transports to the outside10. converts food molecules into forms that are absorbed11. transports nutrients, wastes, and gases throughout the body a. cardiovascular systemb. digestive systemc. endocrine systemd. integumentary systeme. lymphatic systemf. muscular systemg. nervous systemh. reproductive systemi. respiratory systemj. skeletal systemk. urinary systemthe zygote is described as totipotent because it ultimately gives rise to all the cell in your body including the highly specialized cells of your nervous system describe this transition discussing the steps and processes that lead to these specialized cellsPositive feedback and homeostasis Complete the following paragraph to describe how positive feedback helps maintain homeostasis. Choices may be used more than once. A homeostatic mechanism that brings about changes in the direction is called positive feedback. For example, when a woman is giving birth, contractions cause the baby's head to press against the cervix, activating the. The activates nerve impulses that reach the in the brain, which in turn, releases oxytocin, causing further contractions. In this manner, positive feedback results in a(n) inaltimulus, whereas negative feedback results in a(n) in the initial stimulus. < Prev in the 2 of 19 increase decrease control center Next same opposite sensor
- * : Seminal vesicles fluid contains Substances that suppress the immune system against sperm in females. Enzymes to enhance sperm mobility, and enzymes that thicken the ejaculate. Fructose nutrients, prostagladins to stimulate the urethra to contract. all the other choices :The PONS represent all of the following EXCEPT It regulates heartbeat, and blood pressure. plays a role in regulating visceral (internal organ) control. connects the rest of the brain to the spinal cord. It regulates breathing, swallowing, coughing, sneezing, vomiting.Describe if each of the following mechanisms is regulated by positive or negative feedback. neanive 1. When you are hot, you sweat and your blood vessels dilate. As your body cools, you sweat less your blood vessels return to normal. 2. When blood clots, more and more platelets rush to the area 3. When a baby is born, the uterus contracts more often and more forcefully until the baby is born. 4. Blood sugar is regulated by insulin. As blood sugar returns to normal, less insúlin is produced. 5.When you are cold, your blood vessels constrict and your muscles shiver. As your body returns to normal, you cease shivering and your blood vessels restore normal blood flow. 6.After pregnancy, the suckling of an infant causes an increase in milk production.The cells that synthesize and secrete the male sex hormones ( like testosterone ) are Langerhan cells Melanocytes Osteoblasts None of the above The coloured part of the eye is known as : the iris the cornea the retina O the choroid body
- A woman is in labor. The size of the fetus combined with the contractions of the uterine muscular layer stretches the uterine wall, stimulating stretch receptors in the cervix. Signals from these receptors are conducted through nerves to the hypothalamus/posterior pituitary. The hypothalamus/posterior pituitary releases oxytocin. The oxytocin travels through the blood and stimulates the smooth muscle layer of the uterus. Oxytocin has two effects on the uterine smooth muscle:1. Itdirectlystimulatesthesmoothmuscletocontractmorefrequentlyandmoreforcefully.2. Itcausestheuterinewalltoreleaseprostaglandins,whichincreasethefrequencyandforceofthe contractions even more.These effects push the fetus more forcefully into the cervix, stimulating the stretch receptors further. The receptors send additional impulses to the hypothalamus/posterior pituitary. The increased activation of the hypothalamus/posterior pituitary stimulates release of additional oxytocin, which further stimulates the uterus.…There are two major coordinate all of the other organ systems in the human body. systems in the body that sensory hormones The system is comprised of the brain, spinal cord, and ions associated nervous The action of the nervous system allows the body to respond to both external and internal control nerves In addition, the the body's other systems, like maintenance of the male and female reproductive organs. system also regulates the functions of urinary stimuli This system's response, however, is slower due to the use of endocrineWhich of the basic life processes—metabolism, responsiveness, movement, growth, differentiation, and reproduction, is referred to by the following descriptions? 1. For animals with three germ layers, the mesoderm forms skeletal muscle, bone, connective tissue, the heart, and the urogenital system. 2. Putting strain on the muscles through working out results in an increase in muscle fibers.Having more muscle fibers will lead to greater strength and muscle size.
- Describe the organ system. Identify two organs in each system, then give two functions to each organ. Skeletal System Muscular System Integumentary System Circulatory System Respiratory System Lymphatic System Digestive System Urinary System Nervous System Endocrine System Male Reproductive System Female Reproductive SystemFor questions 3–7, match each organ system with one of the followingfunctions.a. regulates other organ systemsb. removes waste products from the blood; maintains water balancec. regulates temperature; reduces water loss; provides protectiond. removes foreign substances from the blood; combats disease;maintains tissue fluid balancee. produces movement; maintains posture; produces body heat3. Endocrine system4. Integumentary system5. Muscular system6. Nervous system7. Urinary systemWhich of the following statements is false? Hormones are excreted via tubes The pancreas is an accessory digestive organ The alveoli are sites of gas exchange Examples of gametes are sperm and egg cells