Answer the following statement(s) true (T) or false (F)
1. Breasts are present in both males and females, whereas functional mammary glands are only present in females.
2. The skin carries out the first step in the synthesis of vitamin D.
3. Living keratinocytes exfoliate from the epidermis as tiny specks called dander.
4. The deeper of the two layers of the skin is the hypodermis.
1. True
2. True
3. False
4. False
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In order for a ballerina to dance on point (on her toes), which set of muscles would she use?
A) Gastrocnemius and tibialis anterior B) Gastrocnemius and soleus C) Soleus and extensor digitorum longus D) Tibialis anterior and externsor digitorum longus
The squid served as an ideal model system to study neurophysiology because
A) Squids are invertebrates and invertebrates have a simpler nervous system than vertebrates. B) The large diameter of the squid's neurons enabled researchers to make recordings from inside of a nerve cell. C) Fast electrical communication is a unique feature of squids. D) Squids are active predators and therefore have many nerves that can be easily studied.
Which area of a sarcomere only contains thick filaments?
A) H band B) I band C) A band D) zone of overlap
All of the following structures are located within the rectus sheath EXCEPT
(A) pyramidalis (B) rectus abdominis (C) inferior epigastric arteries and veins (D) deep inguinal ring (E) ventral primary rami of T7-T12 nerves