Posts Tagged ‘Honor Students’

How to Study Neuroanatomy

December 5th, 2009



I have studied and interviewed groups of medical and science students that have excelled in their course work. It is true that there are specific and detailed guidelines that these students adhere to and credit for their academic success. With some time and applying these study skills to your studies, you can greatly improve your academic performance. The following are study strategies and tips from past honor students of Neuroanatomy.

Study Skill #1 – Develop a mental 3D image of the brain, spinal cord, and all the nerve pathways. The best way to do this is a 3-prong approach using pictures of the gross structure, cross-sections, and your text. Take the pons for example. You should have one or two pictures showing the gross anatomical structure connected to the whole brain stem. Ideally, you would want two different views, such as lateral and anterior. This makes you see the pons in relation to its surroundings and how it connects with them. Your second source will be cross-sections of the pons. It is helpful to start from one end and work your way to the other, caudally to rostrally for example. This allows you to view the composition of the pons and relate the position of specific nuclei and tracts to the gross structure. For example, the abducens and facial nuclei appear at the level of the caudal pons. The third source will be your notes or text. Follow the words as they describe the relationships of the structures. Go back and use your own words to state where the specific nuclei appear and what connects to the pons. This will allow you to see the information from varying views and relationships, and you will begin to construct your own mental image of the human brain.

Study Skill #2 – Terminology is crucial. Similar to general human anatomy, often terms will give clues about their function and route. Neuroanatomy can have terms that are very easy to confuse, like fasciculus versus funiculus. Moreover, the material tends to build on itself so it is important to understand these differences from the start. If you are having trouble, make photocopies of the illustrations and cross-sections with the labels whited out and fill them in on your own.

Study Skill #3 – Use colored pencils. This is the best way to trace the pathways of the nerves and their connections. For example, use blue for first-degree neurons, red for second degree, and so on. This will reinforce the mental picture you are creating by separating the connections with color. It will be easier to remember the location of the cell bodies and recall which neuron decussitates the midline.

Study Skill #4 – Describe the nerve tracts in your own words. This allows your brain to recall on a mental image of the pathway, digest it, and transmit it to paper – which is exactly what an exam question will require you to do. Take the Medial Lemniscus for example. The first-degree neuron has its cell body in the dorsal root ganglion and enters the spinal cord via the medial division. At this point, it gives off collaterals and ascends ipsilaterally in the fasciculus gracilis (or cuneatus) to synapse in the nucleus gracilis (or cuneatus) in the caudal medulla. Then the second-degree neuron ascends and crosses the midline to form the characteristic shape of the Medial Lemniscus tract between the inferior olivary nuclei. It continues to synapse on the thalamus (now on the contralateral side) where third degree neurons send their axons through the internal capsule to the post-central gyrus. Be sure to note the location of cell bodies in addition to where a specific neuron crosses the midline.

Study Skill #5 – Know the stain. This is obvious, but many students make simple mistakes because they do not take the time to note what type of stain they are examining. During an exam take a second to write, “myelin = black, cell bodies = gray” for a Weingarten stain for example. This will also keep you from jumping to conclusions and matching the wrong words with images. For example, in the medulla the nucleus solitaries can be easily confused with the fasciculus solitaries. By noting the color designation, you will prevent a mistake and correctly identify the fasciculus solitarius as a black myelin structure.

Study Skill #6 – Compare cross-sections. This is helpful if you can gather different sections of the same structure. You would want a caudal, mid, and rostral section of the medulla for example. Focus on the identifying features of each level and their relationship to surrounding structures. Ask yourself, “How do I know I am looking at the mid-medulla?” The Hypoglossal nucleus is only present at that particular level. Focus on the exit or entry of cranial nerves at all levels of the brainstem because this will be extremely important when solving nerve lesion problems.

Study Skill #7 – Do practice problems. This is essential for nerve lesion questions. If you are given an image, ask yourself where you are in the brain or brainstem. If a specific tract was lesioned, did it already cross the midline? If a nucleus was destroyed, where does it send fibers? From where does it receive them? It is often helpful to write down the specific structures that are lesioned. Next to them write out their function. Continue beside that to list the clinical symptoms and any clinical tests that would reveal them.

By: Jordan Castle

How to Study Human Physiology

November 29th, 2009



I have studied and interviewed groups of medical and science students that have excelled in their course work. It is true that there are specific and detailed guidelines that these students adhere to and credit for their academic success. With some time and applying these study skills to your studies you can greatly improve your academic performance. The following are study strategies and tips from past honor students of Human Physiology.

Study Skill #1 – Keep in mind the Big Picture. In fact, it can be summed up in one word . . . Homeostasis. Nearly every function of all the organs in the human body are trying to maintain or return to a healthy, low-stress state of existence. In the broadest of terms, this means that a stimulus sets off a trigger, that causes a response or action from a system. This is much like the way your thermostat is set at 70° F. When the temperature in the room drops below, say 68° , it stimulates the furnace. The action is that it pumps more heat into the room to bring the temperature back to 70°. In the body, there is also a system to counter the “furnace”, and bring the temperature back towards 70° when it exceeds it. So the body’s organ systems are engaging in a push-and-pull war that is constantly working to maintain the body’s vitals at normal levels. Keep this example in mind, and most complicated relationships will fit into this elementary mold.

Study Skill #2 – Memorize a formula, but know the concept. The formulas merely portray a relationship – that is it. Students often get caught up on inserting numbers and magically arriving at the solution. However, many problems will express the answers in fractions or use arbitrary variables. In other words, the student must understand that if “x” goes up, then “y” goes down. Use numbers when your are studying to make sure you get the meaning, but the purpose is to realize that a formula means that many different factors are related to each other in specific ways.

Study Skill #3 – Know the systems purpose. This is most important in hypothetical scenarios, like a trauma event, a favorite for exam questions. Take the kidneys for example, they filter blood, form urine, maintain pH, and secrete hormones. However, their first priority is to maintain blood pressure; and in a hemorrhage state, this will trump all other functions.

Study Skill #4 – Use interactive graphs. The concepts of human physiology are dynamic, that is that they are functioning within a significant time component. Take the heart for example, you may know everything about the pressure-volume loop and the frank-starling law, but if you fail to incorporate time it will be difficult to comprehend the functioning system. Look at the electrical activity for example, the AV node slows down the contraction signal so that the ventricles have time to fill. Keep this in mind when the heart rate or its contraction strength is considered.

Study Skill #5 – Explain the concepts to somebody else. Ideally it would be to a classmate who can question your statements, but it even works with your 5 year old brother. The point is that the concepts of medical physiology often take the shape of circles. Students can understand individual legs of the system, but they have difficulty connecting the dots. By organizing all of your thoughts and translating them into a logical flow of speech, you will solidify your understanding of the human body.

Study Skill #6 – Practice. There are no short-cuts. Physiology is a difficult subject. Use our collection of practice exams and quizzes to test your understanding. These problems will give you hypothetical situations, like hypothermia or hemorrhage, and force you to think about a system’s functions from various points. Remember the study strategies listed in this article and stay persistent.

By: Jordan Castle

How to Study Human Anatomy

October 15th, 2009



I have studied and interviewed groups of medical and science students that have excelled in their course work.  It is true that there are specific and detailed guidelines that these students adhere to and credit for their academic success.  With some time and applying these study skills to your studies you can greatly improve your academic performance.  The following are study strategies and tips from past honor students of Human Anatomy.

Study Skill #1 – It is NOT enough to simply read, re-read, and re-type up the notes.  The goal in anatomy is to become a visual learner, so it is extremely important to keep pictures in front of you.  Let’s say you are studying the forearm for example.  The best approach is three pronged.  That is, to have three pictures out side-by-side, one of the superficial structures, one of the deep muscles and bone matrix, and a third of cross-sections.  Now as you read each sentence of your text, the words will have graphic substance to support them.  This allows your brain to start building the 3-D structure of the human body.

Study Skill #2 – Knowing the relationships is key.  This means that if you are given a point anywhere in the human body, that you should be able to navigate your way to any other point by spatial relationships to landmark structures.  The best way to accomplish this is by describing the path of a body part in relation to its surroundings.  Let’s take the Ulnar Nerve for example.  Beginning in the axilla, it courses as the most medial branch of the brachial plexus.  As it descends down the arm, it remains superficial to the triceps muscles, medial to the humerus, and maintains a tight medial position to the brachial artery.  It continues this until the distal region of the arm, where it courses on the posterior aspect of the humerus, and then it makes a tight cross over the elbow joint posterior to the medial epicondyle.  It continues between the heads of the flexor carpi ulnaris muscle and enters the anterior compartment of the forearm where it accompanies the ulnar artery.  This will enhance your understanding of human anatomy because it forces your brain to travel through the mental images and describe it in your own words.  This is a skill that will be necessary for nerve lesion questions.

Study Skill #3 – Make charts for the muscles.  List the muscles in the rows on the left and then make columns on the right for Origin, Insertion, Action, and Innervation.  Stare at pictures of the muscle under study and match the answers in the columns with the pictures. 

Study Skill #4 – Memorize the boundaries and contents of specific compartments of the human body.  For example, the Cubital Fossa is bounded: Laterally – medial border of brachioradialis, Medially – the lateral border of pronator teres, Floor – brachialis, Roof – skin and fascia, Contents – median nerve, brachial artery, tendon of biceps, radial nerve, & median cubital vein.  Once these have been memorized they serve as valuable landmarks to navigate your way around the body.

Study Skill #5 – Understand the terminology.  This is obvious, but if you do it from the very beginning of your human anatomy course it will save you a lot of time later on.  Anatomists often sound like they are speaking a different language and it overwhelms students at first.  But if you take the time, you will see that a name of a muscle or ligament will often tell of its origin, insertion, or action. Flexor Digitorum Profundus for example, is the major muscle that flexes the fingers.  Therefore, you may already know what Flexor Digitorum Superficialis does, it’s the same action, but this weaker muscle lies closer to the surface of the forearm.  In addition, arteries tend to be named for their destination.  The right coronary artery will supply blood to the right ventricle of the heart.  Knowing the terminology breaks down the information in digestable pieces and makes it easier for you to remember where things are positioned.

Study Skill #6 – Photocopy the pictures from your anatomy book and white out the labels.  In fact, make several copies of important diagrams without labels and use these to study and fill them in on your own.  It is often helpful to use these same pictures to trace the pathways of the nerves and arteries with colored pencils.  This will help to separate the structures in your mind and reinforce their routes.

Study Skill #7 – If you have access to a cadaver, give him/her a name, because the amount of time you spend with the cadaver is directly related to your grade.  Identify the same structure on multiple cadavers.  This exercise will prove that you can use different anatomical landmarks as a navigation system for the human body.  This is also important to understand and identify regions of variation in the body, such as arterial branches of the subclavian.  Keep in mind that arteries should be named based on where they are going, not where they branched from.

By: Jordan Castle