Guide Biology and Anatomy & Physiology Helps: The Cell

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However, they can be seen with a microscope. The human body develops from the zygote which is formed by the fusion of female egg cell with male spermatozoon. The zygote divides and as the fetus grows, specialized cells with different structures and functions are produced.


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Cells consist of cytoplasm enclosed within a membrane, which contains many biomolecules such as proteins and nucleic acids. For example, neurophysiology is the study of the brain, spinal cord, and nerves and how these work together to perform functions as complex and diverse as vision, movement, and thinking.

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Physiologists may work from the organ level exploring, for example, what different parts of the brain do to the molecular level such as exploring how an electrochemical signal travels along nerves. Form is closely related to function in all living things.

For example, the thin flap of your eyelid can snap down to clear away dust particles and almost instantaneously slide back up to allow you to see again. At the microscopic level, the arrangement and function of the nerves and muscles that serve the eyelid allow for its quick action and retreat. At a smaller level of analysis, the function of these nerves and muscles likewise relies on the interactions of specific molecules and ions.

Even the three-dimensional structure of certain molecules is essential to their function. Your study of anatomy and physiology will make more sense if you continually relate the form of the structures you are studying to their function. In fact, it can be somewhat frustrating to attempt to study anatomy without an understanding of the physiology that a body structure supports.

Anatomy & Physiology Vs. Biology

Imagine, for example, trying to appreciate the unique arrangement of the bones of the human hand if you had no conception of the function of the hand. Fortunately, your understanding of how the human hand manipulates tools—from pens to cell phones—helps you appreciate the unique alignment of the thumb in opposition to the four fingers, making your hand a structure that allows you to pinch and grasp objects and type text messages.


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  4. In the past, anatomy has primarily been studied via observing injuries, and later by the dissection of anatomical structures of cadavers, but in the past century, computer-assisted imaging techniques have allowed clinicians to look inside the living body. Human physiology is the scientific study of the chemistry and physics of the structures of the body.

    Cells as the Basic Unit of Life

    Physiology explains how the structures of the body work together to maintain life. It is difficult to study structure anatomy without knowledge of function physiology. The two disciplines are typically studied together because form and function are closely related in all living things.

    Anatomy: What is it and why is it important?

    Which of the following specialties might focus on studying all of the structures of the ankle and foot? A scientist wants to study how the body uses foods and fluids during a marathon run. Entry requirements vary. However, most courses will ask for chemistry and biology at A-level or equivalent. Psychology and mathematics may also be desirable.

    There are lots of options for anatomy and physiology graduates, in health-related professions and beyond.

    Chapter Review

    Many graduates work as physiotherapists, or in fields such as cardiology, audiology, neurophysiology or speech and language therapy. If you loved the research side of your course, a career in science research could be right up your street.


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    This will require extra study, but you will be able to specialise in an area of particular interest.